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[perl5.git] / perl.c
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1/* perl.c
2 *
4c79ee7a 3 * Copyright (c) 1987-2003 Larry Wall
a687059c 4 *
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5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
a687059c 7 *
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8 */
9
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10/*
11 * "A ship then new they built for him/of mithril and of elven glass" --Bilbo
12 */
45d8adaa 13
378cc40b 14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_PERL_C
378cc40b 16#include "perl.h"
e3321bb0 17#include "patchlevel.h" /* for local_patches */
378cc40b 18
011f1a1a
JH
19#ifdef NETWARE
20#include "nwutil.h"
21char *nw_get_sitelib(const char *pl);
22#endif
23
df5cef82 24/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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25#ifdef I_UNISTD
26#include <unistd.h>
27#endif
a0d0e21e 28
5311654c
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29#ifdef __BEOS__
30# define HZ 1000000
31#endif
32
33#ifndef HZ
34# ifdef CLK_TCK
35# define HZ CLK_TCK
36# else
37# define HZ 60
38# endif
39#endif
40
7114a2d2 41#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 42char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
43#endif
44
acfe0abc 45static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 46
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LW
47#ifdef IAMSUID
48#ifndef DOSUID
49#define DOSUID
50#endif
51#endif
378cc40b 52
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53#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
54#ifdef DOSUID
55#undef DOSUID
56#endif
57#endif
8d063cd8 58
3db8f154 59#if defined(USE_ITHREADS)
06d86050
GS
60# define INIT_TLS_AND_INTERP \
61 STMT_START { \
62 if (!PL_curinterp) { \
63 PERL_SET_INTERP(my_perl); \
64 INIT_THREADS; \
65 ALLOC_THREAD_KEY; \
534825c4
GS
66 PERL_SET_THX(my_perl); \
67 OP_REFCNT_INIT; \
7d4724a4 68 MUTEX_INIT(&PL_dollarzero_mutex); \
534825c4
GS
69 } \
70 else { \
71 PERL_SET_THX(my_perl); \
06d86050 72 } \
06d86050 73 } STMT_END
3db8f154 74#else
06d86050
GS
75# define INIT_TLS_AND_INTERP \
76 STMT_START { \
77 if (!PL_curinterp) { \
78 PERL_SET_INTERP(my_perl); \
79 } \
80 PERL_SET_THX(my_perl); \
81 } STMT_END
82# endif
06d86050 83
32e30700
GS
84#ifdef PERL_IMPLICIT_SYS
85PerlInterpreter *
7766f137
GS
86perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
87 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
88 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
89 struct IPerlDir* ipD, struct IPerlSock* ipS,
90 struct IPerlProc* ipP)
91{
92 PerlInterpreter *my_perl;
32e30700
GS
93 /* New() needs interpreter, so call malloc() instead */
94 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
06d86050 95 INIT_TLS_AND_INTERP;
32e30700
GS
96 Zero(my_perl, 1, PerlInterpreter);
97 PL_Mem = ipM;
7766f137
GS
98 PL_MemShared = ipMS;
99 PL_MemParse = ipMP;
32e30700
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100 PL_Env = ipE;
101 PL_StdIO = ipStd;
102 PL_LIO = ipLIO;
103 PL_Dir = ipD;
104 PL_Sock = ipS;
105 PL_Proc = ipP;
7766f137 106
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107 return my_perl;
108}
109#else
954c1994
GS
110
111/*
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112=head1 Embedding Functions
113
954c1994
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114=for apidoc perl_alloc
115
116Allocates a new Perl interpreter. See L<perlembed>.
117
118=cut
119*/
120
93a17b20 121PerlInterpreter *
cea2e8a9 122perl_alloc(void)
79072805 123{
cea2e8a9 124 PerlInterpreter *my_perl;
35d7cf2c
JH
125#ifdef USE_5005THREADS
126 dTHX;
127#endif
79072805 128
54aff467 129 /* New() needs interpreter, so call malloc() instead */
e8ee3774 130 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 131
06d86050 132 INIT_TLS_AND_INTERP;
dedcbb81 133 Zero(my_perl, 1, PerlInterpreter);
cea2e8a9 134 return my_perl;
79072805 135}
32e30700 136#endif /* PERL_IMPLICIT_SYS */
79072805 137
954c1994
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138/*
139=for apidoc perl_construct
140
141Initializes a new Perl interpreter. See L<perlembed>.
142
143=cut
144*/
145
79072805 146void
0cb96387 147perl_construct(pTHXx)
79072805 148{
8990e307 149#ifdef MULTIPLICITY
54aff467 150 init_interp();
ac27b0f5 151 PL_perl_destruct_level = 1;
54aff467
GS
152#else
153 if (PL_perl_destruct_level > 0)
154 init_interp();
155#endif
156
33f46ff6 157 /* Init the real globals (and main thread)? */
3280af22 158 if (!PL_linestr) {
14dd3ad8 159#ifdef PERL_FLEXIBLE_EXCEPTIONS
0b94c7bb 160 PL_protect = MEMBER_TO_FPTR(Perl_default_protect); /* for exceptions */
14dd3ad8 161#endif
312caa8e 162
2aea9f8a
GS
163 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
164
3280af22
NIS
165 PL_linestr = NEWSV(65,79);
166 sv_upgrade(PL_linestr,SVt_PVIV);
79072805 167
3280af22 168 if (!SvREADONLY(&PL_sv_undef)) {
d689ffdd
JP
169 /* set read-only and try to insure than we wont see REFCNT==0
170 very often */
171
3280af22
NIS
172 SvREADONLY_on(&PL_sv_undef);
173 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
79072805 174
3280af22
NIS
175 sv_setpv(&PL_sv_no,PL_No);
176 SvNV(&PL_sv_no);
177 SvREADONLY_on(&PL_sv_no);
178 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
79072805 179
3280af22
NIS
180 sv_setpv(&PL_sv_yes,PL_Yes);
181 SvNV(&PL_sv_yes);
182 SvREADONLY_on(&PL_sv_yes);
183 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
6e72f9df 184 }
79072805 185
cea2e8a9 186 PL_sighandlerp = Perl_sighandler;
3280af22 187 PL_pidstatus = newHV();
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LW
188 }
189
8bfdd7d9 190 PL_rs = newSVpvn("\n", 1);
dc92893f 191
cea2e8a9 192 init_stacks();
79072805 193
748a9306 194 init_ids();
3280af22 195 PL_lex_state = LEX_NOTPARSING;
a5f75d66 196
312caa8e 197 JMPENV_BOOTSTRAP;
f86702cc
PP
198 STATUS_ALL_SUCCESS;
199
0672f40e 200 init_i18nl10n(1);
36477c24 201 SET_NUMERIC_STANDARD();
0b5b802d 202
a7cb1f99
GS
203 {
204 U8 *s;
205 PL_patchlevel = NEWSV(0,4);
155aba94 206 (void)SvUPGRADE(PL_patchlevel, SVt_PVNV);
a7cb1f99 207 if (PERL_REVISION > 127 || PERL_VERSION > 127 || PERL_SUBVERSION > 127)
806e7201 208 SvGROW(PL_patchlevel, UTF8_MAXLEN*3+1);
a7cb1f99 209 s = (U8*)SvPVX(PL_patchlevel);
9041c2e3
NIS
210 /* Build version strings using "native" characters */
211 s = uvchr_to_utf8(s, (UV)PERL_REVISION);
212 s = uvchr_to_utf8(s, (UV)PERL_VERSION);
213 s = uvchr_to_utf8(s, (UV)PERL_SUBVERSION);
a7cb1f99
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214 *s = '\0';
215 SvCUR_set(PL_patchlevel, s - (U8*)SvPVX(PL_patchlevel));
216 SvPOK_on(PL_patchlevel);
00d6e121
MB
217 SvNVX(PL_patchlevel) = (NV)PERL_REVISION +
218 ((NV)PERL_VERSION / (NV)1000) +
219 ((NV)PERL_SUBVERSION / (NV)1000000);
a7cb1f99
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220 SvNOK_on(PL_patchlevel); /* dual valued */
221 SvUTF8_on(PL_patchlevel);
222 SvREADONLY_on(PL_patchlevel);
223 }
79072805 224
ab821d7f 225#if defined(LOCAL_PATCH_COUNT)
3280af22 226 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
227#endif
228
52853b95
GS
229#ifdef HAVE_INTERP_INTERN
230 sys_intern_init();
231#endif
232
3a1ee7e8 233 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 234
3280af22
NIS
235 PL_fdpid = newAV(); /* for remembering popen pids by fd */
236 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
24944567 237 PL_errors = newSVpvn("",0);
48c6b404 238 sv_setpvn(PERL_DEBUG_PAD(0), "", 0); /* For regex debugging. */
1f483ca1
JH
239 sv_setpvn(PERL_DEBUG_PAD(1), "", 0); /* ext/re needs these */
240 sv_setpvn(PERL_DEBUG_PAD(2), "", 0); /* even without DEBUGGING. */
1fcf4c12 241#ifdef USE_ITHREADS
13137afc
AB
242 PL_regex_padav = newAV();
243 av_push(PL_regex_padav,(SV*)newAV()); /* First entry is an array of empty elements */
244 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 245#endif
e5dd39fc 246#ifdef USE_REENTRANT_API
59bd0823 247 Perl_reentrant_init(aTHX);
e5dd39fc 248#endif
3d47000e
AB
249
250 /* Note that strtab is a rather special HV. Assumptions are made
251 about not iterating on it, and not adding tie magic to it.
252 It is properly deallocated in perl_destruct() */
253 PL_strtab = newHV();
254
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AB
255 HvSHAREKEYS_off(PL_strtab); /* mandatory */
256 hv_ksplit(PL_strtab, 512);
257
0631ea03
AB
258#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
259 _dyld_lookup_and_bind
260 ("__environ", (unsigned long *) &environ_pointer, NULL);
261#endif /* environ */
262
263#ifdef USE_ENVIRON_ARRAY
264 PL_origenviron = environ;
265#endif
266
5311654c
JH
267 /* Use sysconf(_SC_CLK_TCK) if available, if not
268 * available or if the sysconf() fails, use the HZ. */
269#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
270 PL_clocktick = sysconf(_SC_CLK_TCK);
271 if (PL_clocktick <= 0)
272#endif
273 PL_clocktick = HZ;
274
081fc587
AB
275 PL_stashcache = newHV();
276
8990e307 277 ENTER;
79072805
LW
278}
279
954c1994 280/*
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281=for apidoc nothreadhook
282
283Stub that provides thread hook for perl_destruct when there are
284no threads.
285
286=cut
287*/
288
289int
4e9e3734 290Perl_nothreadhook(pTHX)
62375a60
NIS
291{
292 return 0;
293}
294
295/*
954c1994
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296=for apidoc perl_destruct
297
298Shuts down a Perl interpreter. See L<perlembed>.
299
300=cut
301*/
302
31d77e54 303int
0cb96387 304perl_destruct(pTHXx)
79072805 305{
7c474504 306 volatile int destruct_level; /* 0=none, 1=full, 2=full with checks */
a0d0e21e 307 HV *hv;
4d1ff10f 308#ifdef USE_5005THREADS
cea2e8a9 309 dTHX;
4d1ff10f 310#endif /* USE_5005THREADS */
8990e307 311
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312 /* wait for all pseudo-forked children to finish */
313 PERL_WAIT_FOR_CHILDREN;
314
3280af22 315 destruct_level = PL_perl_destruct_level;
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316#ifdef DEBUGGING
317 {
318 char *s;
155aba94 319 if ((s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL"))) {
5f05dabc
PP
320 int i = atoi(s);
321 if (destruct_level < i)
322 destruct_level = i;
323 }
4633a7c4
LW
324 }
325#endif
326
31d77e54
AB
327
328 if(PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
329 dJMPENV;
330 int x = 0;
331
332 JMPENV_PUSH(x);
333 if (PL_endav && !PL_minus_c)
334 call_list(PL_scopestack_ix, PL_endav);
335 JMPENV_POP;
26f423df 336 }
f3faeb53 337 LEAVE;
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338 FREETMPS;
339
e00b64d4 340 /* Need to flush since END blocks can produce output */
f13a2bc0 341 my_fflush_all();
e00b64d4 342
62375a60
NIS
343 if (CALL_FPTR(PL_threadhook)(aTHX)) {
344 /* Threads hook has vetoed further cleanup */
b47cad08 345 return STATUS_NATIVE_EXPORT;
62375a60
NIS
346 }
347
ff0cee69
PP
348 /* We must account for everything. */
349
350 /* Destroy the main CV and syntax tree */
3280af22 351 if (PL_main_root) {
3280af22
NIS
352 op_free(PL_main_root);
353 PL_main_root = Nullop;
a0d0e21e 354 }
3280af22
NIS
355 PL_curcop = &PL_compiling;
356 PL_main_start = Nullop;
357 SvREFCNT_dec(PL_main_cv);
358 PL_main_cv = Nullcv;
24d3c518 359 PL_dirty = TRUE;
ff0cee69 360
13621cfb
NIS
361 /* Tell PerlIO we are about to tear things apart in case
362 we have layers which are using resources that should
363 be cleaned up now.
364 */
365
366 PerlIO_destruct(aTHX);
367
3280af22 368 if (PL_sv_objcount) {
a0d0e21e
LW
369 /*
370 * Try to destruct global references. We do this first so that the
371 * destructors and destructees still exist. Some sv's might remain.
372 * Non-referenced objects are on their own.
373 */
a0d0e21e 374 sv_clean_objs();
8990e307
LW
375 }
376
5cd24f17 377 /* unhook hooks which will soon be, or use, destroyed data */
3280af22
NIS
378 SvREFCNT_dec(PL_warnhook);
379 PL_warnhook = Nullsv;
380 SvREFCNT_dec(PL_diehook);
381 PL_diehook = Nullsv;
5cd24f17 382
4b556e6c 383 /* call exit list functions */
3280af22 384 while (PL_exitlistlen-- > 0)
acfe0abc 385 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 386
3280af22 387 Safefree(PL_exitlist);
4b556e6c 388
1c4916e5
CB
389 PL_exitlist = NULL;
390 PL_exitlistlen = 0;
391
a0d0e21e 392 if (destruct_level == 0){
8990e307 393
a0d0e21e 394 DEBUG_P(debprofdump());
ac27b0f5 395
56a2bab7
NIS
396#if defined(PERLIO_LAYERS)
397 /* No more IO - including error messages ! */
398 PerlIO_cleanup(aTHX);
399#endif
400
a0d0e21e 401 /* The exit() function will do everything that needs doing. */
b47cad08 402 return STATUS_NATIVE_EXPORT;
a0d0e21e 403 }
5dd60ef7 404
551a8b83 405 /* jettison our possibly duplicated environment */
4b647fb0
DM
406 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
407 * so we certainly shouldn't free it here
408 */
409#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
4efc5df6
GS
410 if (environ != PL_origenviron
411#ifdef USE_ITHREADS
412 /* only main thread can free environ[0] contents */
413 && PL_curinterp == aTHX
414#endif
415 )
416 {
551a8b83
JH
417 I32 i;
418
419 for (i = 0; environ[i]; i++)
4b420006 420 safesysfree(environ[i]);
0631ea03 421
4b420006
JH
422 /* Must use safesysfree() when working with environ. */
423 safesysfree(environ);
551a8b83
JH
424
425 environ = PL_origenviron;
426 }
427#endif
428
5f8cb046
DM
429#ifdef USE_ITHREADS
430 /* the syntax tree is shared between clones
431 * so op_free(PL_main_root) only ReREFCNT_dec's
432 * REGEXPs in the parent interpreter
433 * we need to manually ReREFCNT_dec for the clones
434 */
435 {
436 I32 i = AvFILLp(PL_regex_padav) + 1;
437 SV **ary = AvARRAY(PL_regex_padav);
438
439 while (i) {
35061a7e 440 SV *resv = ary[--i];
ba89bb6e 441 REGEXP *re = INT2PTR(REGEXP *,SvIVX(resv));
35061a7e
DM
442
443 if (SvFLAGS(resv) & SVf_BREAK) {
577e12cc 444 /* this is PL_reg_curpm, already freed
35061a7e
DM
445 * flag is set in regexec.c:S_regtry
446 */
447 SvFLAGS(resv) &= ~SVf_BREAK;
3a1ee7e8 448 }
1cc8b4c5
AB
449 else if(SvREPADTMP(resv)) {
450 SvREPADTMP_off(resv);
451 }
35061a7e 452 else {
5f8cb046
DM
453 ReREFCNT_dec(re);
454 }
455 }
456 }
457 SvREFCNT_dec(PL_regex_padav);
458 PL_regex_padav = Nullav;
459 PL_regex_pad = NULL;
460#endif
461
081fc587
AB
462 SvREFCNT_dec((SV*) PL_stashcache);
463 PL_stashcache = NULL;
464
5f05dabc
PP
465 /* loosen bonds of global variables */
466
3280af22
NIS
467 if(PL_rsfp) {
468 (void)PerlIO_close(PL_rsfp);
469 PL_rsfp = Nullfp;
8ebc5c01
PP
470 }
471
472 /* Filters for program text */
3280af22
NIS
473 SvREFCNT_dec(PL_rsfp_filters);
474 PL_rsfp_filters = Nullav;
8ebc5c01
PP
475
476 /* switches */
3280af22
NIS
477 PL_preprocess = FALSE;
478 PL_minus_n = FALSE;
479 PL_minus_p = FALSE;
480 PL_minus_l = FALSE;
481 PL_minus_a = FALSE;
482 PL_minus_F = FALSE;
483 PL_doswitches = FALSE;
599cee73 484 PL_dowarn = G_WARN_OFF;
3280af22
NIS
485 PL_doextract = FALSE;
486 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
487 PL_unsafe = FALSE;
488
489 Safefree(PL_inplace);
490 PL_inplace = Nullch;
a7cb1f99 491 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
492
493 if (PL_e_script) {
494 SvREFCNT_dec(PL_e_script);
495 PL_e_script = Nullsv;
8ebc5c01
PP
496 }
497
498 /* magical thingies */
499
7889fe52
NIS
500 SvREFCNT_dec(PL_ofs_sv); /* $, */
501 PL_ofs_sv = Nullsv;
5f05dabc 502
7889fe52
NIS
503 SvREFCNT_dec(PL_ors_sv); /* $\ */
504 PL_ors_sv = Nullsv;
8ebc5c01 505
3280af22
NIS
506 SvREFCNT_dec(PL_rs); /* $/ */
507 PL_rs = Nullsv;
dc92893f 508
d33b2eba
GS
509 PL_multiline = 0; /* $* */
510 Safefree(PL_osname); /* $^O */
511 PL_osname = Nullch;
5f05dabc 512
3280af22
NIS
513 SvREFCNT_dec(PL_statname);
514 PL_statname = Nullsv;
515 PL_statgv = Nullgv;
5f05dabc 516
8ebc5c01
PP
517 /* defgv, aka *_ should be taken care of elsewhere */
518
8ebc5c01 519 /* clean up after study() */
3280af22
NIS
520 SvREFCNT_dec(PL_lastscream);
521 PL_lastscream = Nullsv;
522 Safefree(PL_screamfirst);
523 PL_screamfirst = 0;
524 Safefree(PL_screamnext);
525 PL_screamnext = 0;
8ebc5c01 526
7d5ea4e7
GS
527 /* float buffer */
528 Safefree(PL_efloatbuf);
529 PL_efloatbuf = Nullch;
530 PL_efloatsize = 0;
531
8ebc5c01 532 /* startup and shutdown function lists */
3280af22 533 SvREFCNT_dec(PL_beginav);
5a837c8f 534 SvREFCNT_dec(PL_beginav_save);
3280af22 535 SvREFCNT_dec(PL_endav);
7d30b5c4 536 SvREFCNT_dec(PL_checkav);
ece599bd 537 SvREFCNT_dec(PL_checkav_save);
3280af22
NIS
538 SvREFCNT_dec(PL_initav);
539 PL_beginav = Nullav;
5a837c8f 540 PL_beginav_save = Nullav;
3280af22 541 PL_endav = Nullav;
7d30b5c4 542 PL_checkav = Nullav;
ece599bd 543 PL_checkav_save = Nullav;
3280af22 544 PL_initav = Nullav;
5618dfe8 545
8ebc5c01 546 /* shortcuts just get cleared */
3280af22 547 PL_envgv = Nullgv;
3280af22
NIS
548 PL_incgv = Nullgv;
549 PL_hintgv = Nullgv;
550 PL_errgv = Nullgv;
551 PL_argvgv = Nullgv;
552 PL_argvoutgv = Nullgv;
553 PL_stdingv = Nullgv;
bf49b057 554 PL_stderrgv = Nullgv;
3280af22
NIS
555 PL_last_in_gv = Nullgv;
556 PL_replgv = Nullgv;
5c831c24 557 PL_debstash = Nullhv;
8ebc5c01
PP
558
559 /* reset so print() ends up where we expect */
560 setdefout(Nullgv);
5c831c24 561
7a1c5554
GS
562 SvREFCNT_dec(PL_argvout_stack);
563 PL_argvout_stack = Nullav;
8ebc5c01 564
5c831c24
GS
565 SvREFCNT_dec(PL_modglobal);
566 PL_modglobal = Nullhv;
567 SvREFCNT_dec(PL_preambleav);
568 PL_preambleav = Nullav;
569 SvREFCNT_dec(PL_subname);
570 PL_subname = Nullsv;
571 SvREFCNT_dec(PL_linestr);
572 PL_linestr = Nullsv;
573 SvREFCNT_dec(PL_pidstatus);
574 PL_pidstatus = Nullhv;
575 SvREFCNT_dec(PL_toptarget);
576 PL_toptarget = Nullsv;
577 SvREFCNT_dec(PL_bodytarget);
578 PL_bodytarget = Nullsv;
579 PL_formtarget = Nullsv;
580
d33b2eba 581 /* free locale stuff */
b9582b6a 582#ifdef USE_LOCALE_COLLATE
d33b2eba
GS
583 Safefree(PL_collation_name);
584 PL_collation_name = Nullch;
b9582b6a 585#endif
d33b2eba 586
b9582b6a 587#ifdef USE_LOCALE_NUMERIC
d33b2eba
GS
588 Safefree(PL_numeric_name);
589 PL_numeric_name = Nullch;
a453c169 590 SvREFCNT_dec(PL_numeric_radix_sv);
b9582b6a 591#endif
d33b2eba 592
5c831c24
GS
593 /* clear utf8 character classes */
594 SvREFCNT_dec(PL_utf8_alnum);
595 SvREFCNT_dec(PL_utf8_alnumc);
596 SvREFCNT_dec(PL_utf8_ascii);
597 SvREFCNT_dec(PL_utf8_alpha);
598 SvREFCNT_dec(PL_utf8_space);
599 SvREFCNT_dec(PL_utf8_cntrl);
600 SvREFCNT_dec(PL_utf8_graph);
601 SvREFCNT_dec(PL_utf8_digit);
602 SvREFCNT_dec(PL_utf8_upper);
603 SvREFCNT_dec(PL_utf8_lower);
604 SvREFCNT_dec(PL_utf8_print);
605 SvREFCNT_dec(PL_utf8_punct);
606 SvREFCNT_dec(PL_utf8_xdigit);
607 SvREFCNT_dec(PL_utf8_mark);
608 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 609 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 610 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 611 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
612 SvREFCNT_dec(PL_utf8_idstart);
613 SvREFCNT_dec(PL_utf8_idcont);
5c831c24
GS
614 PL_utf8_alnum = Nullsv;
615 PL_utf8_alnumc = Nullsv;
616 PL_utf8_ascii = Nullsv;
617 PL_utf8_alpha = Nullsv;
618 PL_utf8_space = Nullsv;
619 PL_utf8_cntrl = Nullsv;
620 PL_utf8_graph = Nullsv;
621 PL_utf8_digit = Nullsv;
622 PL_utf8_upper = Nullsv;
623 PL_utf8_lower = Nullsv;
624 PL_utf8_print = Nullsv;
625 PL_utf8_punct = Nullsv;
626 PL_utf8_xdigit = Nullsv;
627 PL_utf8_mark = Nullsv;
628 PL_utf8_toupper = Nullsv;
629 PL_utf8_totitle = Nullsv;
630 PL_utf8_tolower = Nullsv;
b4e400f9 631 PL_utf8_tofold = Nullsv;
82686b01
JH
632 PL_utf8_idstart = Nullsv;
633 PL_utf8_idcont = Nullsv;
5c831c24 634
971a9dd3
GS
635 if (!specialWARN(PL_compiling.cop_warnings))
636 SvREFCNT_dec(PL_compiling.cop_warnings);
5c831c24 637 PL_compiling.cop_warnings = Nullsv;
ac27b0f5
NIS
638 if (!specialCopIO(PL_compiling.cop_io))
639 SvREFCNT_dec(PL_compiling.cop_io);
640 PL_compiling.cop_io = Nullsv;
05ec9bb3
NIS
641 CopFILE_free(&PL_compiling);
642 CopSTASH_free(&PL_compiling);
5c831c24 643
a0d0e21e 644 /* Prepare to destruct main symbol table. */
5f05dabc 645
3280af22
NIS
646 hv = PL_defstash;
647 PL_defstash = 0;
a0d0e21e 648 SvREFCNT_dec(hv);
5c831c24
GS
649 SvREFCNT_dec(PL_curstname);
650 PL_curstname = Nullsv;
a0d0e21e 651
5a844595
GS
652 /* clear queued errors */
653 SvREFCNT_dec(PL_errors);
654 PL_errors = Nullsv;
655
a0d0e21e 656 FREETMPS;
0453d815 657 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 658 if (PL_scopestack_ix != 0)
9014280d 659 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 660 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
661 (long)PL_scopestack_ix);
662 if (PL_savestack_ix != 0)
9014280d 663 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 664 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
665 (long)PL_savestack_ix);
666 if (PL_tmps_floor != -1)
9014280d 667 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 668 (long)PL_tmps_floor + 1);
a0d0e21e 669 if (cxstack_ix != -1)
9014280d 670 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 671 (long)cxstack_ix + 1);
a0d0e21e 672 }
8990e307
LW
673
674 /* Now absolutely destruct everything, somehow or other, loops or no. */
d33b2eba 675 SvFLAGS(PL_fdpid) |= SVTYPEMASK; /* don't clean out pid table now */
3280af22 676 SvFLAGS(PL_strtab) |= SVTYPEMASK; /* don't clean out strtab now */
5226ed68
JH
677
678 /* the 2 is for PL_fdpid and PL_strtab */
679 while (PL_sv_count > 2 && sv_clean_all())
680 ;
681
d33b2eba
GS
682 SvFLAGS(PL_fdpid) &= ~SVTYPEMASK;
683 SvFLAGS(PL_fdpid) |= SVt_PVAV;
3280af22
NIS
684 SvFLAGS(PL_strtab) &= ~SVTYPEMASK;
685 SvFLAGS(PL_strtab) |= SVt_PVHV;
d33b2eba 686
d4777f27
GS
687 AvREAL_off(PL_fdpid); /* no surviving entries */
688 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
d33b2eba
GS
689 PL_fdpid = Nullav;
690
6c644e78
GS
691#ifdef HAVE_INTERP_INTERN
692 sys_intern_clear();
693#endif
694
6e72f9df
PP
695 /* Destruct the global string table. */
696 {
697 /* Yell and reset the HeVAL() slots that are still holding refcounts,
698 * so that sv_free() won't fail on them.
699 */
700 I32 riter;
701 I32 max;
702 HE *hent;
703 HE **array;
704
705 riter = 0;
3280af22
NIS
706 max = HvMAX(PL_strtab);
707 array = HvARRAY(PL_strtab);
6e72f9df
PP
708 hent = array[0];
709 for (;;) {
0453d815 710 if (hent && ckWARN_d(WARN_INTERNAL)) {
9014280d 711 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 712 "Unbalanced string table refcount: (%d) for \"%s\"",
6e72f9df
PP
713 HeVAL(hent) - Nullsv, HeKEY(hent));
714 HeVAL(hent) = Nullsv;
715 hent = HeNEXT(hent);
716 }
717 if (!hent) {
718 if (++riter > max)
719 break;
720 hent = array[riter];
721 }
722 }
723 }
3280af22 724 SvREFCNT_dec(PL_strtab);
6e72f9df 725
e652bb2f 726#ifdef USE_ITHREADS
a0739874
DM
727 /* free the pointer table used for cloning */
728 ptr_table_free(PL_ptr_table);
53186e96 729#endif
a0739874 730
d33b2eba
GS
731 /* free special SVs */
732
733 SvREFCNT(&PL_sv_yes) = 0;
734 sv_clear(&PL_sv_yes);
735 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 736 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
737
738 SvREFCNT(&PL_sv_no) = 0;
739 sv_clear(&PL_sv_no);
740 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 741 SvFLAGS(&PL_sv_no) = 0;
01724ea0 742
9f375a43
DM
743 {
744 int i;
745 for (i=0; i<=2; i++) {
746 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
747 sv_clear(PERL_DEBUG_PAD(i));
748 SvANY(PERL_DEBUG_PAD(i)) = NULL;
749 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
750 }
751 }
752
0453d815 753 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 754 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 755
eba0f806
DM
756#ifdef DEBUG_LEAKING_SCALARS
757 if (PL_sv_count != 0) {
758 SV* sva;
759 SV* sv;
760 register SV* svend;
761
762 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
763 svend = &sva[SvREFCNT(sva)];
764 for (sv = sva + 1; sv < svend; ++sv) {
765 if (SvTYPE(sv) != SVTYPEMASK) {
766 PerlIO_printf(Perl_debug_log, "leaked: 0x%p\n", sv);
767 }
768 }
769 }
770 }
771#endif
772
773
56a2bab7 774#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
775 /* No more IO - including error messages ! */
776 PerlIO_cleanup(aTHX);
777#endif
778
9f4bd222
NIS
779 /* sv_undef needs to stay immortal until after PerlIO_cleanup
780 as currently layers use it rather than Nullsv as a marker
781 for no arg - and will try and SvREFCNT_dec it.
782 */
783 SvREFCNT(&PL_sv_undef) = 0;
784 SvREADONLY_off(&PL_sv_undef);
785
3280af22 786 Safefree(PL_origfilename);
3280af22 787 Safefree(PL_reg_start_tmp);
5c5e4c24
IZ
788 if (PL_reg_curpm)
789 Safefree(PL_reg_curpm);
82ba1be6 790 Safefree(PL_reg_poscache);
3280af22
NIS
791 Safefree(HeKEY_hek(&PL_hv_fetch_ent_mh));
792 Safefree(PL_op_mask);
cf36064f
GS
793 Safefree(PL_psig_ptr);
794 Safefree(PL_psig_name);
2c2666fc 795 Safefree(PL_bitcount);
ce08f86c 796 Safefree(PL_psig_pend);
6e72f9df 797 nuke_stacks();
3280af22 798 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 799
a0d0e21e 800 DEBUG_P(debprofdump());
d33b2eba 801
e5dd39fc 802#ifdef USE_REENTRANT_API
10bc17b6 803 Perl_reentrant_free(aTHX);
e5dd39fc
AB
804#endif
805
612f20c3
GS
806 sv_free_arenas();
807
fc36a67e
PP
808 /* As the absolutely last thing, free the non-arena SV for mess() */
809
3280af22 810 if (PL_mess_sv) {
9c63abab
GS
811 /* it could have accumulated taint magic */
812 if (SvTYPE(PL_mess_sv) >= SVt_PVMG) {
813 MAGIC* mg;
814 MAGIC* moremagic;
815 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
816 moremagic = mg->mg_moremagic;
14befaf4
DM
817 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
818 && mg->mg_len >= 0)
9c63abab
GS
819 Safefree(mg->mg_ptr);
820 Safefree(mg);
821 }
822 }
fc36a67e 823 /* we know that type >= SVt_PV */
155aba94 824 (void)SvOOK_off(PL_mess_sv);
3280af22
NIS
825 Safefree(SvPVX(PL_mess_sv));
826 Safefree(SvANY(PL_mess_sv));
827 Safefree(PL_mess_sv);
828 PL_mess_sv = Nullsv;
fc36a67e 829 }
31d77e54 830 return STATUS_NATIVE_EXPORT;
79072805
LW
831}
832
954c1994
GS
833/*
834=for apidoc perl_free
835
836Releases a Perl interpreter. See L<perlembed>.
837
838=cut
839*/
840
79072805 841void
0cb96387 842perl_free(pTHXx)
79072805 843{
acfe0abc 844#if defined(WIN32) || defined(NETWARE)
ce3e5b80 845# if defined(PERL_IMPLICIT_SYS)
acfe0abc
GS
846# ifdef NETWARE
847 void *host = nw_internal_host;
848# else
849 void *host = w32_internal_host;
850# endif
ce3e5b80 851 PerlMem_free(aTHXx);
acfe0abc 852# ifdef NETWARE
011f1a1a 853 nw_delete_internal_host(host);
acfe0abc
GS
854# else
855 win32_delete_internal_host(host);
856# endif
1c0ca838
GS
857# else
858 PerlMem_free(aTHXx);
859# endif
acfe0abc
GS
860#else
861 PerlMem_free(aTHXx);
76e3520e 862#endif
79072805
LW
863}
864
4b556e6c 865void
864dbfa3 866Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 867{
3280af22
NIS
868 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
869 PL_exitlist[PL_exitlistlen].fn = fn;
870 PL_exitlist[PL_exitlistlen].ptr = ptr;
871 ++PL_exitlistlen;
4b556e6c
JD
872}
873
954c1994
GS
874/*
875=for apidoc perl_parse
876
877Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
878
879=cut
880*/
881
79072805 882int
0cb96387 883perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 884{
6224f72b 885 I32 oldscope;
6224f72b 886 int ret;
db36c5a1 887 dJMPENV;
4d1ff10f 888#ifdef USE_5005THREADS
cea2e8a9
GS
889 dTHX;
890#endif
8d063cd8 891
a687059c
LW
892#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
893#ifdef IAMSUID
894#undef IAMSUID
cea2e8a9 895 Perl_croak(aTHX_ "suidperl is no longer needed since the kernel can now execute\n\
a687059c
LW
896setuid perl scripts securely.\n");
897#endif
898#endif
899
3280af22 900 PL_origargc = argc;
e2975953 901 PL_origargv = argv;
a0d0e21e 902
3280af22 903 if (PL_do_undump) {
a0d0e21e
LW
904
905 /* Come here if running an undumped a.out. */
906
3280af22
NIS
907 PL_origfilename = savepv(argv[0]);
908 PL_do_undump = FALSE;
a0d0e21e 909 cxstack_ix = -1; /* start label stack again */
748a9306 910 init_ids();
a0d0e21e
LW
911 init_postdump_symbols(argc,argv,env);
912 return 0;
913 }
914
3280af22 915 if (PL_main_root) {
3280af22
NIS
916 op_free(PL_main_root);
917 PL_main_root = Nullop;
ff0cee69 918 }
3280af22
NIS
919 PL_main_start = Nullop;
920 SvREFCNT_dec(PL_main_cv);
921 PL_main_cv = Nullcv;
79072805 922
3280af22
NIS
923 time(&PL_basetime);
924 oldscope = PL_scopestack_ix;
599cee73 925 PL_dowarn = G_WARN_OFF;
f86702cc 926
14dd3ad8
GS
927#ifdef PERL_FLEXIBLE_EXCEPTIONS
928 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vparse_body), env, xsinit);
929#else
930 JMPENV_PUSH(ret);
931#endif
6224f72b 932 switch (ret) {
312caa8e 933 case 0:
14dd3ad8
GS
934#ifndef PERL_FLEXIBLE_EXCEPTIONS
935 parse_body(env,xsinit);
936#endif
7d30b5c4
GS
937 if (PL_checkav)
938 call_list(oldscope, PL_checkav);
14dd3ad8
GS
939 ret = 0;
940 break;
6224f72b
GS
941 case 1:
942 STATUS_ALL_FAILURE;
943 /* FALL THROUGH */
944 case 2:
945 /* my_exit() was called */
3280af22 946 while (PL_scopestack_ix > oldscope)
6224f72b
GS
947 LEAVE;
948 FREETMPS;
3280af22 949 PL_curstash = PL_defstash;
7d30b5c4
GS
950 if (PL_checkav)
951 call_list(oldscope, PL_checkav);
14dd3ad8
GS
952 ret = STATUS_NATIVE_EXPORT;
953 break;
6224f72b 954 case 3:
bf49b057 955 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
956 ret = 1;
957 break;
6224f72b 958 }
14dd3ad8
GS
959 JMPENV_POP;
960 return ret;
961}
962
963#ifdef PERL_FLEXIBLE_EXCEPTIONS
964STATIC void *
965S_vparse_body(pTHX_ va_list args)
966{
967 char **env = va_arg(args, char**);
968 XSINIT_t xsinit = va_arg(args, XSINIT_t);
969
970 return parse_body(env, xsinit);
312caa8e 971}
14dd3ad8 972#endif
312caa8e
CS
973
974STATIC void *
14dd3ad8 975S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 976{
312caa8e
CS
977 int argc = PL_origargc;
978 char **argv = PL_origargv;
312caa8e
CS
979 char *scriptname = NULL;
980 int fdscript = -1;
981 VOL bool dosearch = FALSE;
982 char *validarg = "";
312caa8e
CS
983 register SV *sv;
984 register char *s;
cf756827 985 char *cddir = Nullch;
312caa8e 986
3280af22 987 sv_setpvn(PL_linestr,"",0);
79cb57f6 988 sv = newSVpvn("",0); /* first used for -I flags */
6224f72b
GS
989 SAVEFREESV(sv);
990 init_main_stash();
54310121 991
6224f72b
GS
992 for (argc--,argv++; argc > 0; argc--,argv++) {
993 if (argv[0][0] != '-' || !argv[0][1])
994 break;
995#ifdef DOSUID
996 if (*validarg)
997 validarg = " PHOOEY ";
998 else
999 validarg = argv[0];
13281fa4 1000#endif
6224f72b
GS
1001 s = argv[0]+1;
1002 reswitch:
1003 switch (*s) {
729a02f2 1004 case 'C':
1d5472a9
GS
1005#ifndef PERL_STRICT_CR
1006 case '\r':
1007#endif
6224f72b
GS
1008 case ' ':
1009 case '0':
1010 case 'F':
1011 case 'a':
1012 case 'c':
1013 case 'd':
1014 case 'D':
1015 case 'h':
1016 case 'i':
1017 case 'l':
1018 case 'M':
1019 case 'm':
1020 case 'n':
1021 case 'p':
1022 case 's':
1023 case 'u':
1024 case 'U':
1025 case 'v':
599cee73
PM
1026 case 'W':
1027 case 'X':
6224f72b 1028 case 'w':
06492da6 1029 case 'A':
155aba94 1030 if ((s = moreswitches(s)))
6224f72b
GS
1031 goto reswitch;
1032 break;
33b78306 1033
1dbad523 1034 case 't':
317ea90d
MS
1035 if( !PL_tainting ) {
1036 PL_taint_warn = TRUE;
1037 PL_tainting = TRUE;
1038 }
1039 s++;
1040 goto reswitch;
6224f72b 1041 case 'T':
3280af22 1042 PL_tainting = TRUE;
317ea90d 1043 PL_taint_warn = FALSE;
6224f72b
GS
1044 s++;
1045 goto reswitch;
f86702cc 1046
6224f72b 1047 case 'e':
bf4acbe4
GS
1048#ifdef MACOS_TRADITIONAL
1049 /* ignore -e for Dev:Pseudo argument */
1050 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1051 break;
bf4acbe4 1052#endif
3280af22 1053 if (PL_euid != PL_uid || PL_egid != PL_gid)
cea2e8a9 1054 Perl_croak(aTHX_ "No -e allowed in setuid scripts");
3280af22 1055 if (!PL_e_script) {
79cb57f6 1056 PL_e_script = newSVpvn("",0);
0cb96387 1057 filter_add(read_e_script, NULL);
6224f72b
GS
1058 }
1059 if (*++s)
3280af22 1060 sv_catpv(PL_e_script, s);
6224f72b 1061 else if (argv[1]) {
3280af22 1062 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1063 argc--,argv++;
1064 }
1065 else
cea2e8a9 1066 Perl_croak(aTHX_ "No code specified for -e");
3280af22 1067 sv_catpv(PL_e_script, "\n");
6224f72b 1068 break;
afe37c7d 1069
6224f72b
GS
1070 case 'I': /* -I handled both here and in moreswitches() */
1071 forbid_setid("-I");
1072 if (!*++s && (s=argv[1]) != Nullch) {
1073 argc--,argv++;
1074 }
6224f72b 1075 if (s && *s) {
0df16ed7
GS
1076 char *p;
1077 STRLEN len = strlen(s);
1078 p = savepvn(s, len);
574c798a 1079 incpush(p, TRUE, TRUE, FALSE);
0df16ed7
GS
1080 sv_catpvn(sv, "-I", 2);
1081 sv_catpvn(sv, p, len);
1082 sv_catpvn(sv, " ", 1);
6224f72b 1083 Safefree(p);
0df16ed7
GS
1084 }
1085 else
a67e862a 1086 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b
GS
1087 break;
1088 case 'P':
1089 forbid_setid("-P");
3280af22 1090 PL_preprocess = TRUE;
6224f72b
GS
1091 s++;
1092 goto reswitch;
1093 case 'S':
1094 forbid_setid("-S");
1095 dosearch = TRUE;
1096 s++;
1097 goto reswitch;
1098 case 'V':
3280af22
NIS
1099 if (!PL_preambleav)
1100 PL_preambleav = newAV();
1101 av_push(PL_preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
6224f72b 1102 if (*++s != ':') {
3280af22 1103 PL_Sv = newSVpv("print myconfig();",0);
6224f72b 1104#ifdef VMS
6b88bc9c 1105 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
6224f72b 1106#else
3280af22 1107 sv_catpv(PL_Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
6224f72b 1108#endif
3280af22 1109 sv_catpv(PL_Sv,"\" Compile-time options:");
6224f72b 1110# ifdef DEBUGGING
3280af22 1111 sv_catpv(PL_Sv," DEBUGGING");
6224f72b 1112# endif
6224f72b 1113# ifdef MULTIPLICITY
8f872242 1114 sv_catpv(PL_Sv," MULTIPLICITY");
6224f72b 1115# endif
4d1ff10f
AB
1116# ifdef USE_5005THREADS
1117 sv_catpv(PL_Sv," USE_5005THREADS");
b363f7ed 1118# endif
ac5e8965
JH
1119# ifdef USE_ITHREADS
1120 sv_catpv(PL_Sv," USE_ITHREADS");
1121# endif
10cc9d2a
JH
1122# ifdef USE_64_BIT_INT
1123 sv_catpv(PL_Sv," USE_64_BIT_INT");
1124# endif
1125# ifdef USE_64_BIT_ALL
1126 sv_catpv(PL_Sv," USE_64_BIT_ALL");
ac5e8965
JH
1127# endif
1128# ifdef USE_LONG_DOUBLE
1129 sv_catpv(PL_Sv," USE_LONG_DOUBLE");
1130# endif
53430762
JH
1131# ifdef USE_LARGE_FILES
1132 sv_catpv(PL_Sv," USE_LARGE_FILES");
1133# endif
ac5e8965
JH
1134# ifdef USE_SOCKS
1135 sv_catpv(PL_Sv," USE_SOCKS");
1136# endif
b363f7ed
GS
1137# ifdef PERL_IMPLICIT_CONTEXT
1138 sv_catpv(PL_Sv," PERL_IMPLICIT_CONTEXT");
1139# endif
1140# ifdef PERL_IMPLICIT_SYS
1141 sv_catpv(PL_Sv," PERL_IMPLICIT_SYS");
1142# endif
3280af22 1143 sv_catpv(PL_Sv,"\\n\",");
b363f7ed 1144
6224f72b
GS
1145#if defined(LOCAL_PATCH_COUNT)
1146 if (LOCAL_PATCH_COUNT > 0) {
1147 int i;
3280af22 1148 sv_catpv(PL_Sv,"\" Locally applied patches:\\n\",");
6224f72b 1149 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
3280af22 1150 if (PL_localpatches[i])
cea2e8a9 1151 Perl_sv_catpvf(aTHX_ PL_Sv,"q\" \t%s\n\",",PL_localpatches[i]);
6224f72b
GS
1152 }
1153 }
1154#endif
cea2e8a9 1155 Perl_sv_catpvf(aTHX_ PL_Sv,"\" Built under %s\\n\"",OSNAME);
6224f72b
GS
1156#ifdef __DATE__
1157# ifdef __TIME__
cea2e8a9 1158 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
6224f72b 1159# else
cea2e8a9 1160 Perl_sv_catpvf(aTHX_ PL_Sv,",\" Compiled on %s\\n\"",__DATE__);
6224f72b
GS
1161# endif
1162#endif
3280af22 1163 sv_catpv(PL_Sv, "; \
6224f72b 1164$\"=\"\\n \"; \
69fcd688
JH
1165@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; ");
1166#ifdef __CYGWIN__
1167 sv_catpv(PL_Sv,"\
1168push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
1169#endif
1170 sv_catpv(PL_Sv, "\
6224f72b
GS
1171print \" \\%ENV:\\n @env\\n\" if @env; \
1172print \" \\@INC:\\n @INC\\n\";");
1173 }
1174 else {
3280af22
NIS
1175 PL_Sv = newSVpv("config_vars(qw(",0);
1176 sv_catpv(PL_Sv, ++s);
1177 sv_catpv(PL_Sv, "))");
6224f72b
GS
1178 s += strlen(s);
1179 }
3280af22 1180 av_push(PL_preambleav, PL_Sv);
6224f72b
GS
1181 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1182 goto reswitch;
1183 case 'x':
3280af22 1184 PL_doextract = TRUE;
6224f72b
GS
1185 s++;
1186 if (*s)
f4c556ac 1187 cddir = s;
6224f72b
GS
1188 break;
1189 case 0:
1190 break;
1191 case '-':
1192 if (!*++s || isSPACE(*s)) {
1193 argc--,argv++;
1194 goto switch_end;
1195 }
1196 /* catch use of gnu style long options */
1197 if (strEQ(s, "version")) {
1198 s = "v";
1199 goto reswitch;
1200 }
1201 if (strEQ(s, "help")) {
1202 s = "h";
1203 goto reswitch;
1204 }
1205 s--;
1206 /* FALL THROUGH */
1207 default:
cea2e8a9 1208 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1209 }
1210 }
6224f72b 1211 switch_end:
7f9e821f 1212 sv_setsv(get_sv("/", TRUE), PL_rs);
54310121 1213
f675dbe5
CB
1214 if (
1215#ifndef SECURE_INTERNAL_GETENV
1216 !PL_tainting &&
1217#endif
cf756827 1218 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1219 {
cf756827 1220 char *popt = s;
74288ac8
GS
1221 while (isSPACE(*s))
1222 s++;
317ea90d 1223 if (*s == '-' && *(s+1) == 'T') {
74288ac8 1224 PL_tainting = TRUE;
317ea90d
MS
1225 PL_taint_warn = FALSE;
1226 }
74288ac8 1227 else {
cf756827 1228 char *popt_copy = Nullch;
74288ac8 1229 while (s && *s) {
4ea8f8fb 1230 char *d;
74288ac8
GS
1231 while (isSPACE(*s))
1232 s++;
1233 if (*s == '-') {
1234 s++;
1235 if (isSPACE(*s))
1236 continue;
1237 }
4ea8f8fb 1238 d = s;
74288ac8
GS
1239 if (!*s)
1240 break;
06492da6 1241 if (!strchr("DIMUdmtwA", *s))
cea2e8a9 1242 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1243 while (++s && *s) {
1244 if (isSPACE(*s)) {
cf756827
GS
1245 if (!popt_copy) {
1246 popt_copy = SvPVX(sv_2mortal(newSVpv(popt,0)));
1247 s = popt_copy + (s - popt);
1248 d = popt_copy + (d - popt);
1249 }
4ea8f8fb
MS
1250 *s++ = '\0';
1251 break;
1252 }
1253 }
1c4db469 1254 if (*d == 't') {
317ea90d
MS
1255 if( !PL_tainting ) {
1256 PL_taint_warn = TRUE;
1257 PL_tainting = TRUE;
1258 }
1c4db469
RGS
1259 } else {
1260 moreswitches(d);
1261 }
6224f72b 1262 }
6224f72b
GS
1263 }
1264 }
a0d0e21e 1265
317ea90d
MS
1266 if (PL_taint_warn && PL_dowarn != G_WARN_ALL_OFF) {
1267 PL_compiling.cop_warnings = newSVpvn(WARN_TAINTstring, WARNsize);
1268 }
1269
6224f72b
GS
1270 if (!scriptname)
1271 scriptname = argv[0];
3280af22 1272 if (PL_e_script) {
6224f72b
GS
1273 argc++,argv--;
1274 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1275 }
1276 else if (scriptname == Nullch) {
1277#ifdef MSDOS
1278 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
1279 moreswitches("h");
1280#endif
1281 scriptname = "-";
1282 }
1283
1284 init_perllib();
1285
1286 open_script(scriptname,dosearch,sv,&fdscript);
1287
1288 validate_suid(validarg, scriptname,fdscript);
1289
64ca3a65 1290#ifndef PERL_MICRO
0b5b802d
GS
1291#if defined(SIGCHLD) || defined(SIGCLD)
1292 {
1293#ifndef SIGCHLD
1294# define SIGCHLD SIGCLD
1295#endif
1296 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1297 if (sigstate == SIG_IGN) {
1298 if (ckWARN(WARN_SIGNAL))
9014280d 1299 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
0b5b802d
GS
1300 "Can't ignore signal CHLD, forcing to default");
1301 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
1302 }
1303 }
1304#endif
64ca3a65 1305#endif
0b5b802d 1306
bf4acbe4
GS
1307#ifdef MACOS_TRADITIONAL
1308 if (PL_doextract || gMacPerl_AlwaysExtract) {
1309#else
f4c556ac 1310 if (PL_doextract) {
bf4acbe4 1311#endif
6224f72b 1312 find_beginning();
f4c556ac
GS
1313 if (cddir && PerlDir_chdir(cddir) < 0)
1314 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
1315
1316 }
6224f72b 1317
3280af22
NIS
1318 PL_main_cv = PL_compcv = (CV*)NEWSV(1104,0);
1319 sv_upgrade((SV *)PL_compcv, SVt_PVCV);
1320 CvUNIQUE_on(PL_compcv);
1321
dd2155a4 1322 CvPADLIST(PL_compcv) = pad_new(0);
4d1ff10f 1323#ifdef USE_5005THREADS
533c011a
NIS
1324 CvOWNER(PL_compcv) = 0;
1325 New(666, CvMUTEXP(PL_compcv), 1, perl_mutex);
1326 MUTEX_INIT(CvMUTEXP(PL_compcv));
4d1ff10f 1327#endif /* USE_5005THREADS */
6224f72b 1328
0c4f7ff0 1329 boot_core_PerlIO();
6224f72b 1330 boot_core_UNIVERSAL();
9a34ef1d 1331#ifndef PERL_MICRO
09bef843 1332 boot_core_xsutils();
9a34ef1d 1333#endif
6224f72b
GS
1334
1335 if (xsinit)
acfe0abc 1336 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 1337#ifndef PERL_MICRO
ed79a026 1338#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC)
c5be433b 1339 init_os_extras();
6224f72b 1340#endif
64ca3a65 1341#endif
6224f72b 1342
29209bc5 1343#ifdef USE_SOCKS
1b9c9cf5
DH
1344# ifdef HAS_SOCKS5_INIT
1345 socks5_init(argv[0]);
1346# else
29209bc5 1347 SOCKSinit(argv[0]);
1b9c9cf5 1348# endif
ac27b0f5 1349#endif
29209bc5 1350
6224f72b
GS
1351 init_predump_symbols();
1352 /* init_postdump_symbols not currently designed to be called */
1353 /* more than once (ENV isn't cleared first, for example) */
1354 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 1355 if (!PL_do_undump)
6224f72b
GS
1356 init_postdump_symbols(argc,argv,env);
1357
a05d7ebb
JH
1358 /* PL_unicode is turned on by -C or by $ENV{PERL_UNICODE}.
1359 * PL_utf8locale is conditionally turned on by
085a54d9 1360 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 1361 * look like the user wants to use UTF-8. */
06e66572
JH
1362 if (PL_unicode) {
1363 /* Requires init_predump_symbols(). */
a05d7ebb 1364 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
1365 IO* io;
1366 PerlIO* fp;
1367 SV* sv;
1368
a05d7ebb 1369 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 1370 * and the default open disciplines. */
a05d7ebb
JH
1371 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
1372 PL_stdingv && (io = GvIO(PL_stdingv)) &&
1373 (fp = IoIFP(io)))
1374 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1375 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
1376 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
1377 (fp = IoOFP(io)))
1378 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1379 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
1380 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
1381 (fp = IoOFP(io)))
1382 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
1383 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
1384 (sv = GvSV(gv_fetchpv("\017PEN", TRUE, SVt_PV)))) {
1385 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
1386 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
1387 if (in) {
1388 if (out)
1389 sv_setpvn(sv, ":utf8\0:utf8", 11);
1390 else
1391 sv_setpvn(sv, ":utf8\0", 6);
1392 }
1393 else if (out)
1394 sv_setpvn(sv, "\0:utf8", 6);
1395 SvSETMAGIC(sv);
1396 }
b310b053
JH
1397 }
1398 }
1399
4ffa73a3
JH
1400 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
1401 if (strEQ(s, "unsafe"))
1402 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
1403 else if (strEQ(s, "safe"))
1404 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
1405 else
1406 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
1407 }
1408
6224f72b
GS
1409 init_lexer();
1410
1411 /* now parse the script */
1412
93189314 1413 SETERRNO(0,SS_NORMAL);
3280af22 1414 PL_error_count = 0;
bf4acbe4
GS
1415#ifdef MACOS_TRADITIONAL
1416 if (gMacPerl_SyntaxError = (yyparse() || PL_error_count)) {
1417 if (PL_minus_c)
1418 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
1419 else {
1420 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
1421 MacPerl_MPWFileName(PL_origfilename));
1422 }
1423 }
1424#else
3280af22
NIS
1425 if (yyparse() || PL_error_count) {
1426 if (PL_minus_c)
cea2e8a9 1427 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 1428 else {
cea2e8a9 1429 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 1430 PL_origfilename);
6224f72b
GS
1431 }
1432 }
bf4acbe4 1433#endif
57843af0 1434 CopLINE_set(PL_curcop, 0);
3280af22
NIS
1435 PL_curstash = PL_defstash;
1436 PL_preprocess = FALSE;
1437 if (PL_e_script) {
1438 SvREFCNT_dec(PL_e_script);
1439 PL_e_script = Nullsv;
6224f72b
GS
1440 }
1441
3280af22 1442 if (PL_do_undump)
6224f72b
GS
1443 my_unexec();
1444
57843af0
GS
1445 if (isWARN_ONCE) {
1446 SAVECOPFILE(PL_curcop);
1447 SAVECOPLINE(PL_curcop);
3280af22 1448 gv_check(PL_defstash);
57843af0 1449 }
6224f72b
GS
1450
1451 LEAVE;
1452 FREETMPS;
1453
1454#ifdef MYMALLOC
1455 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
1456 dump_mstats("after compilation:");
1457#endif
1458
1459 ENTER;
3280af22 1460 PL_restartop = 0;
312caa8e 1461 return NULL;
6224f72b
GS
1462}
1463
954c1994
GS
1464/*
1465=for apidoc perl_run
1466
1467Tells a Perl interpreter to run. See L<perlembed>.
1468
1469=cut
1470*/
1471
6224f72b 1472int
0cb96387 1473perl_run(pTHXx)
6224f72b 1474{
6224f72b 1475 I32 oldscope;
14dd3ad8 1476 int ret = 0;
db36c5a1 1477 dJMPENV;
4d1ff10f 1478#ifdef USE_5005THREADS
cea2e8a9
GS
1479 dTHX;
1480#endif
6224f72b 1481
3280af22 1482 oldscope = PL_scopestack_ix;
96e176bf
CL
1483#ifdef VMS
1484 VMSISH_HUSHED = 0;
1485#endif
6224f72b 1486
14dd3ad8 1487#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1488 redo_body:
14dd3ad8
GS
1489 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vrun_body), oldscope);
1490#else
1491 JMPENV_PUSH(ret);
1492#endif
6224f72b
GS
1493 switch (ret) {
1494 case 1:
1495 cxstack_ix = -1; /* start context stack again */
312caa8e 1496 goto redo_body;
14dd3ad8
GS
1497 case 0: /* normal completion */
1498#ifndef PERL_FLEXIBLE_EXCEPTIONS
1499 redo_body:
1500 run_body(oldscope);
1501#endif
1502 /* FALL THROUGH */
1503 case 2: /* my_exit() */
3280af22 1504 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1505 LEAVE;
1506 FREETMPS;
3280af22 1507 PL_curstash = PL_defstash;
3a1ee7e8 1508 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
1509 PL_endav && !PL_minus_c)
1510 call_list(oldscope, PL_endav);
6224f72b
GS
1511#ifdef MYMALLOC
1512 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
1513 dump_mstats("after execution: ");
1514#endif
14dd3ad8
GS
1515 ret = STATUS_NATIVE_EXPORT;
1516 break;
6224f72b 1517 case 3:
312caa8e
CS
1518 if (PL_restartop) {
1519 POPSTACK_TO(PL_mainstack);
1520 goto redo_body;
6224f72b 1521 }
bf49b057 1522 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 1523 FREETMPS;
14dd3ad8
GS
1524 ret = 1;
1525 break;
6224f72b
GS
1526 }
1527
14dd3ad8
GS
1528 JMPENV_POP;
1529 return ret;
312caa8e
CS
1530}
1531
14dd3ad8 1532#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1533STATIC void *
14dd3ad8 1534S_vrun_body(pTHX_ va_list args)
312caa8e 1535{
312caa8e
CS
1536 I32 oldscope = va_arg(args, I32);
1537
14dd3ad8
GS
1538 return run_body(oldscope);
1539}
1540#endif
1541
1542
1543STATIC void *
1544S_run_body(pTHX_ I32 oldscope)
1545{
6224f72b 1546 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 1547 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 1548
3280af22 1549 if (!PL_restartop) {
6224f72b
GS
1550 DEBUG_x(dump_all());
1551 DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
b900a521
JH
1552 DEBUG_S(PerlIO_printf(Perl_debug_log, "main thread is 0x%"UVxf"\n",
1553 PTR2UV(thr)));
6224f72b 1554
3280af22 1555 if (PL_minus_c) {
bf4acbe4 1556#ifdef MACOS_TRADITIONAL
e69a2255
JH
1557 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
1558 (gMacPerl_ErrorFormat ? "# " : ""),
1559 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 1560#else
bf49b057 1561 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 1562#endif
6224f72b
GS
1563 my_exit(0);
1564 }
3280af22 1565 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 1566 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
1567 if (PL_initav)
1568 call_list(oldscope, PL_initav);
6224f72b
GS
1569 }
1570
1571 /* do it */
1572
3280af22 1573 if (PL_restartop) {
533c011a 1574 PL_op = PL_restartop;
3280af22 1575 PL_restartop = 0;
cea2e8a9 1576 CALLRUNOPS(aTHX);
6224f72b 1577 }
3280af22
NIS
1578 else if (PL_main_start) {
1579 CvDEPTH(PL_main_cv) = 1;
533c011a 1580 PL_op = PL_main_start;
cea2e8a9 1581 CALLRUNOPS(aTHX);
6224f72b
GS
1582 }
1583
f6b3007c
JH
1584 my_exit(0);
1585 /* NOTREACHED */
312caa8e 1586 return NULL;
6224f72b
GS
1587}
1588
954c1994 1589/*
ccfc67b7
JH
1590=head1 SV Manipulation Functions
1591
954c1994
GS
1592=for apidoc p||get_sv
1593
1594Returns the SV of the specified Perl scalar. If C<create> is set and the
1595Perl variable does not exist then it will be created. If C<create> is not
1596set and the variable does not exist then NULL is returned.
1597
1598=cut
1599*/
1600
6224f72b 1601SV*
864dbfa3 1602Perl_get_sv(pTHX_ const char *name, I32 create)
6224f72b
GS
1603{
1604 GV *gv;
4d1ff10f 1605#ifdef USE_5005THREADS
6224f72b
GS
1606 if (name[1] == '\0' && !isALPHA(name[0])) {
1607 PADOFFSET tmp = find_threadsv(name);
411caa50 1608 if (tmp != NOT_IN_PAD)
6224f72b 1609 return THREADSV(tmp);
6224f72b 1610 }
4d1ff10f 1611#endif /* USE_5005THREADS */
6224f72b
GS
1612 gv = gv_fetchpv(name, create, SVt_PV);
1613 if (gv)
1614 return GvSV(gv);
1615 return Nullsv;
1616}
1617
954c1994 1618/*
ccfc67b7
JH
1619=head1 Array Manipulation Functions
1620
954c1994
GS
1621=for apidoc p||get_av
1622
1623Returns the AV of the specified Perl array. If C<create> is set and the
1624Perl variable does not exist then it will be created. If C<create> is not
1625set and the variable does not exist then NULL is returned.
1626
1627=cut
1628*/
1629
6224f72b 1630AV*
864dbfa3 1631Perl_get_av(pTHX_ const char *name, I32 create)
6224f72b
GS
1632{
1633 GV* gv = gv_fetchpv(name, create, SVt_PVAV);
1634 if (create)
1635 return GvAVn(gv);
1636 if (gv)
1637 return GvAV(gv);
1638 return Nullav;
1639}
1640
954c1994 1641/*
ccfc67b7
JH
1642=head1 Hash Manipulation Functions
1643
954c1994
GS
1644=for apidoc p||get_hv
1645
1646Returns the HV of the specified Perl hash. If C<create> is set and the
1647Perl variable does not exist then it will be created. If C<create> is not
1648set and the variable does not exist then NULL is returned.
1649
1650=cut
1651*/
1652
6224f72b 1653HV*
864dbfa3 1654Perl_get_hv(pTHX_ const char *name, I32 create)
6224f72b 1655{
a0d0e21e
LW
1656 GV* gv = gv_fetchpv(name, create, SVt_PVHV);
1657 if (create)
1658 return GvHVn(gv);
1659 if (gv)
1660 return GvHV(gv);
1661 return Nullhv;
1662}
1663
954c1994 1664/*
ccfc67b7
JH
1665=head1 CV Manipulation Functions
1666
954c1994
GS
1667=for apidoc p||get_cv
1668
1669Returns the CV of the specified Perl subroutine. If C<create> is set and
1670the Perl subroutine does not exist then it will be declared (which has the
1671same effect as saying C<sub name;>). If C<create> is not set and the
1672subroutine does not exist then NULL is returned.
1673
1674=cut
1675*/
1676
a0d0e21e 1677CV*
864dbfa3 1678Perl_get_cv(pTHX_ const char *name, I32 create)
a0d0e21e
LW
1679{
1680 GV* gv = gv_fetchpv(name, create, SVt_PVCV);
b099ddc0 1681 /* XXX unsafe for threads if eval_owner isn't held */
f6ec51f7
GS
1682 /* XXX this is probably not what they think they're getting.
1683 * It has the same effect as "sub name;", i.e. just a forward
1684 * declaration! */
8ebc5c01 1685 if (create && !GvCVu(gv))
774d564b 1686 return newSUB(start_subparse(FALSE, 0),
a0d0e21e 1687 newSVOP(OP_CONST, 0, newSVpv(name,0)),
4633a7c4 1688 Nullop,
a0d0e21e
LW
1689 Nullop);
1690 if (gv)
8ebc5c01 1691 return GvCVu(gv);
a0d0e21e
LW
1692 return Nullcv;
1693}
1694
79072805
LW
1695/* Be sure to refetch the stack pointer after calling these routines. */
1696
954c1994 1697/*
ccfc67b7
JH
1698
1699=head1 Callback Functions
1700
954c1994
GS
1701=for apidoc p||call_argv
1702
1703Performs a callback to the specified Perl sub. See L<perlcall>.
1704
1705=cut
1706*/
1707
a0d0e21e 1708I32
864dbfa3 1709Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 1710
8ac85365
NIS
1711 /* See G_* flags in cop.h */
1712 /* null terminated arg list */
8990e307 1713{
a0d0e21e 1714 dSP;
8990e307 1715
924508f0 1716 PUSHMARK(SP);
a0d0e21e 1717 if (argv) {
8990e307 1718 while (*argv) {
a0d0e21e 1719 XPUSHs(sv_2mortal(newSVpv(*argv,0)));
8990e307
LW
1720 argv++;
1721 }
a0d0e21e 1722 PUTBACK;
8990e307 1723 }
864dbfa3 1724 return call_pv(sub_name, flags);
8990e307
LW
1725}
1726
954c1994
GS
1727/*
1728=for apidoc p||call_pv
1729
1730Performs a callback to the specified Perl sub. See L<perlcall>.
1731
1732=cut
1733*/
1734
a0d0e21e 1735I32
864dbfa3 1736Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
1737 /* name of the subroutine */
1738 /* See G_* flags in cop.h */
a0d0e21e 1739{
864dbfa3 1740 return call_sv((SV*)get_cv(sub_name, TRUE), flags);
a0d0e21e
LW
1741}
1742
954c1994
GS
1743/*
1744=for apidoc p||call_method
1745
1746Performs a callback to the specified Perl method. The blessed object must
1747be on the stack. See L<perlcall>.
1748
1749=cut
1750*/
1751
a0d0e21e 1752I32
864dbfa3 1753Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
1754 /* name of the subroutine */
1755 /* See G_* flags in cop.h */
a0d0e21e 1756{
968b3946 1757 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
1758}
1759
1760/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
1761/*
1762=for apidoc p||call_sv
1763
1764Performs a callback to the Perl sub whose name is in the SV. See
1765L<perlcall>.
1766
1767=cut
1768*/
1769
a0d0e21e 1770I32
864dbfa3 1771Perl_call_sv(pTHX_ SV *sv, I32 flags)
8ac85365 1772 /* See G_* flags in cop.h */
a0d0e21e 1773{
924508f0 1774 dSP;
a0d0e21e 1775 LOGOP myop; /* fake syntax tree node */
968b3946 1776 UNOP method_op;
aa689395 1777 I32 oldmark;
13689cfe 1778 volatile I32 retval = 0;
a0d0e21e 1779 I32 oldscope;
54310121 1780 bool oldcatch = CATCH_GET;
6224f72b 1781 int ret;
533c011a 1782 OP* oldop = PL_op;
db36c5a1 1783 dJMPENV;
1e422769 1784
a0d0e21e
LW
1785 if (flags & G_DISCARD) {
1786 ENTER;
1787 SAVETMPS;
1788 }
1789
aa689395 1790 Zero(&myop, 1, LOGOP);
54310121 1791 myop.op_next = Nullop;
f51d4af5 1792 if (!(flags & G_NOARGS))
aa689395 1793 myop.op_flags |= OPf_STACKED;
54310121
PP
1794 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1795 (flags & G_ARRAY) ? OPf_WANT_LIST :
1796 OPf_WANT_SCALAR);
462e5cf6 1797 SAVEOP();
533c011a 1798 PL_op = (OP*)&myop;
aa689395 1799
3280af22
NIS
1800 EXTEND(PL_stack_sp, 1);
1801 *++PL_stack_sp = sv;
aa689395 1802 oldmark = TOPMARK;
3280af22 1803 oldscope = PL_scopestack_ix;
a0d0e21e 1804
3280af22 1805 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 1806 /* Handle first BEGIN of -d. */
3280af22 1807 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
1808 /* Try harder, since this may have been a sighandler, thus
1809 * curstash may be meaningless. */
3280af22 1810 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != PL_debstash)
491527d0 1811 && !(flags & G_NODEBUG))
533c011a 1812 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 1813
968b3946
GS
1814 if (flags & G_METHOD) {
1815 Zero(&method_op, 1, UNOP);
1816 method_op.op_next = PL_op;
1817 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
1818 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
f39d0b86 1819 PL_op = (OP*)&method_op;
968b3946
GS
1820 }
1821
312caa8e 1822 if (!(flags & G_EVAL)) {
0cdb2077 1823 CATCH_SET(TRUE);
14dd3ad8 1824 call_body((OP*)&myop, FALSE);
312caa8e 1825 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 1826 CATCH_SET(oldcatch);
312caa8e
CS
1827 }
1828 else {
d78bda3d 1829 myop.op_other = (OP*)&myop;
3280af22 1830 PL_markstack_ptr--;
4633a7c4
LW
1831 /* we're trying to emulate pp_entertry() here */
1832 {
c09156bb 1833 register PERL_CONTEXT *cx;
54310121 1834 I32 gimme = GIMME_V;
ac27b0f5 1835
4633a7c4
LW
1836 ENTER;
1837 SAVETMPS;
ac27b0f5 1838
968b3946 1839 push_return(Nullop);
1d76a5c3 1840 PUSHBLOCK(cx, (CXt_EVAL|CXp_TRYBLOCK), PL_stack_sp);
4633a7c4 1841 PUSHEVAL(cx, 0, 0);
533c011a 1842 PL_eval_root = PL_op; /* Only needed so that goto works right. */
ac27b0f5 1843
faef0170 1844 PL_in_eval = EVAL_INEVAL;
4633a7c4 1845 if (flags & G_KEEPERR)
faef0170 1846 PL_in_eval |= EVAL_KEEPERR;
4633a7c4 1847 else
38a03e6e 1848 sv_setpv(ERRSV,"");
4633a7c4 1849 }
3280af22 1850 PL_markstack_ptr++;
a0d0e21e 1851
14dd3ad8
GS
1852#ifdef PERL_FLEXIBLE_EXCEPTIONS
1853 redo_body:
1854 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1855 (OP*)&myop, FALSE);
14dd3ad8
GS
1856#else
1857 JMPENV_PUSH(ret);
1858#endif
6224f72b
GS
1859 switch (ret) {
1860 case 0:
14dd3ad8
GS
1861#ifndef PERL_FLEXIBLE_EXCEPTIONS
1862 redo_body:
1863 call_body((OP*)&myop, FALSE);
1864#endif
312caa8e
CS
1865 retval = PL_stack_sp - (PL_stack_base + oldmark);
1866 if (!(flags & G_KEEPERR))
1867 sv_setpv(ERRSV,"");
a0d0e21e 1868 break;
6224f72b 1869 case 1:
f86702cc 1870 STATUS_ALL_FAILURE;
a0d0e21e 1871 /* FALL THROUGH */
6224f72b 1872 case 2:
a0d0e21e 1873 /* my_exit() was called */
3280af22 1874 PL_curstash = PL_defstash;
a0d0e21e 1875 FREETMPS;
14dd3ad8 1876 JMPENV_POP;
cc3604b1 1877 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 1878 Perl_croak(aTHX_ "Callback called exit");
f86702cc 1879 my_exit_jump();
a0d0e21e 1880 /* NOTREACHED */
6224f72b 1881 case 3:
3280af22 1882 if (PL_restartop) {
533c011a 1883 PL_op = PL_restartop;
3280af22 1884 PL_restartop = 0;
312caa8e 1885 goto redo_body;
a0d0e21e 1886 }
3280af22 1887 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1888 if (flags & G_ARRAY)
1889 retval = 0;
1890 else {
1891 retval = 1;
3280af22 1892 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 1893 }
312caa8e 1894 break;
a0d0e21e 1895 }
a0d0e21e 1896
3280af22 1897 if (PL_scopestack_ix > oldscope) {
a0a2876f
LW
1898 SV **newsp;
1899 PMOP *newpm;
1900 I32 gimme;
c09156bb 1901 register PERL_CONTEXT *cx;
a0a2876f
LW
1902 I32 optype;
1903
1904 POPBLOCK(cx,newpm);
1905 POPEVAL(cx);
1906 pop_return();
3280af22 1907 PL_curpm = newpm;
a0a2876f 1908 LEAVE;
a0d0e21e 1909 }
14dd3ad8 1910 JMPENV_POP;
a0d0e21e 1911 }
1e422769 1912
a0d0e21e 1913 if (flags & G_DISCARD) {
3280af22 1914 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
1915 retval = 0;
1916 FREETMPS;
1917 LEAVE;
1918 }
533c011a 1919 PL_op = oldop;
a0d0e21e
LW
1920 return retval;
1921}
1922
14dd3ad8 1923#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1924STATIC void *
14dd3ad8 1925S_vcall_body(pTHX_ va_list args)
312caa8e
CS
1926{
1927 OP *myop = va_arg(args, OP*);
1928 int is_eval = va_arg(args, int);
1929
14dd3ad8 1930 call_body(myop, is_eval);
312caa8e
CS
1931 return NULL;
1932}
14dd3ad8 1933#endif
312caa8e
CS
1934
1935STATIC void
14dd3ad8 1936S_call_body(pTHX_ OP *myop, int is_eval)
312caa8e 1937{
312caa8e
CS
1938 if (PL_op == myop) {
1939 if (is_eval)
f807eda9 1940 PL_op = Perl_pp_entereval(aTHX); /* this doesn't do a POPMARK */
312caa8e 1941 else
f807eda9 1942 PL_op = Perl_pp_entersub(aTHX); /* this does */
312caa8e
CS
1943 }
1944 if (PL_op)
cea2e8a9 1945 CALLRUNOPS(aTHX);
312caa8e
CS
1946}
1947
6e72f9df 1948/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 1949
954c1994
GS
1950/*
1951=for apidoc p||eval_sv
1952
1953Tells Perl to C<eval> the string in the SV.
1954
1955=cut
1956*/
1957
a0d0e21e 1958I32
864dbfa3 1959Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 1960
8ac85365 1961 /* See G_* flags in cop.h */
a0d0e21e 1962{
924508f0 1963 dSP;
a0d0e21e 1964 UNOP myop; /* fake syntax tree node */
8fa7f367 1965 volatile I32 oldmark = SP - PL_stack_base;
13689cfe 1966 volatile I32 retval = 0;
4633a7c4 1967 I32 oldscope;
6224f72b 1968 int ret;
533c011a 1969 OP* oldop = PL_op;
db36c5a1 1970 dJMPENV;
84902520 1971
4633a7c4
LW
1972 if (flags & G_DISCARD) {
1973 ENTER;
1974 SAVETMPS;
1975 }
1976
462e5cf6 1977 SAVEOP();
533c011a
NIS
1978 PL_op = (OP*)&myop;
1979 Zero(PL_op, 1, UNOP);
3280af22
NIS
1980 EXTEND(PL_stack_sp, 1);
1981 *++PL_stack_sp = sv;
1982 oldscope = PL_scopestack_ix;
79072805 1983
4633a7c4
LW
1984 if (!(flags & G_NOARGS))
1985 myop.op_flags = OPf_STACKED;
79072805 1986 myop.op_next = Nullop;
6e72f9df 1987 myop.op_type = OP_ENTEREVAL;
54310121
PP
1988 myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID :
1989 (flags & G_ARRAY) ? OPf_WANT_LIST :
1990 OPf_WANT_SCALAR);
6e72f9df
PP
1991 if (flags & G_KEEPERR)
1992 myop.op_flags |= OPf_SPECIAL;
4633a7c4 1993
14dd3ad8 1994#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 1995 redo_body:
14dd3ad8 1996 CALLPROTECT(aTHX_ pcur_env, &ret, MEMBER_TO_FPTR(S_vcall_body),
db36c5a1 1997 (OP*)&myop, TRUE);
14dd3ad8
GS
1998#else
1999 JMPENV_PUSH(ret);
2000#endif
6224f72b
GS
2001 switch (ret) {
2002 case 0:
14dd3ad8
GS
2003#ifndef PERL_FLEXIBLE_EXCEPTIONS
2004 redo_body:
2005 call_body((OP*)&myop,TRUE);
2006#endif
312caa8e
CS
2007 retval = PL_stack_sp - (PL_stack_base + oldmark);
2008 if (!(flags & G_KEEPERR))
2009 sv_setpv(ERRSV,"");
4633a7c4 2010 break;
6224f72b 2011 case 1:
f86702cc 2012 STATUS_ALL_FAILURE;
4633a7c4 2013 /* FALL THROUGH */
6224f72b 2014 case 2:
4633a7c4 2015 /* my_exit() was called */
3280af22 2016 PL_curstash = PL_defstash;
4633a7c4 2017 FREETMPS;
14dd3ad8 2018 JMPENV_POP;
cc3604b1 2019 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2020 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2021 my_exit_jump();
4633a7c4 2022 /* NOTREACHED */
6224f72b 2023 case 3:
3280af22 2024 if (PL_restartop) {
533c011a 2025 PL_op = PL_restartop;
3280af22 2026 PL_restartop = 0;
312caa8e 2027 goto redo_body;
4633a7c4 2028 }
3280af22 2029 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2030 if (flags & G_ARRAY)
2031 retval = 0;
2032 else {
2033 retval = 1;
3280af22 2034 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2035 }
312caa8e 2036 break;
4633a7c4
LW
2037 }
2038
14dd3ad8 2039 JMPENV_POP;
4633a7c4 2040 if (flags & G_DISCARD) {
3280af22 2041 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2042 retval = 0;
2043 FREETMPS;
2044 LEAVE;
2045 }
533c011a 2046 PL_op = oldop;
4633a7c4
LW
2047 return retval;
2048}
2049
954c1994
GS
2050/*
2051=for apidoc p||eval_pv
2052
2053Tells Perl to C<eval> the given string and return an SV* result.
2054
2055=cut
2056*/
2057
137443ea 2058SV*
864dbfa3 2059Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea
PP
2060{
2061 dSP;
2062 SV* sv = newSVpv(p, 0);
2063
864dbfa3 2064 eval_sv(sv, G_SCALAR);
137443ea
PP
2065 SvREFCNT_dec(sv);
2066
2067 SPAGAIN;
2068 sv = POPs;
2069 PUTBACK;
2070
2d8e6c8d
GS
2071 if (croak_on_error && SvTRUE(ERRSV)) {
2072 STRLEN n_a;
cea2e8a9 2073 Perl_croak(aTHX_ SvPVx(ERRSV, n_a));
2d8e6c8d 2074 }
137443ea
PP
2075
2076 return sv;
2077}
2078
4633a7c4
LW
2079/* Require a module. */
2080
954c1994 2081/*
ccfc67b7
JH
2082=head1 Embedding Functions
2083
954c1994
GS
2084=for apidoc p||require_pv
2085
7d3fb230
BS
2086Tells Perl to C<require> the file named by the string argument. It is
2087analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2088implemented that way; consider using load_module instead.
954c1994 2089
7d3fb230 2090=cut */
954c1994 2091
4633a7c4 2092void
864dbfa3 2093Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2094{
d3acc0f7
JP
2095 SV* sv;
2096 dSP;
e788e7d3 2097 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7
JP
2098 PUTBACK;
2099 sv = sv_newmortal();
4633a7c4
LW
2100 sv_setpv(sv, "require '");
2101 sv_catpv(sv, pv);
2102 sv_catpv(sv, "'");
864dbfa3 2103 eval_sv(sv, G_DISCARD);
d3acc0f7
JP
2104 SPAGAIN;
2105 POPSTACK;
79072805
LW
2106}
2107
79072805 2108void
864dbfa3 2109Perl_magicname(pTHX_ char *sym, char *name, I32 namlen)
79072805
LW
2110{
2111 register GV *gv;
2112
155aba94 2113 if ((gv = gv_fetchpv(sym,TRUE, SVt_PV)))
14befaf4 2114 sv_magic(GvSV(gv), (SV*)gv, PERL_MAGIC_sv, name, namlen);
79072805
LW
2115}
2116
76e3520e 2117STATIC void
cea2e8a9 2118S_usage(pTHX_ char *name) /* XXX move this out into a module ? */
4633a7c4 2119{
ab821d7f 2120 /* This message really ought to be max 23 lines.
75c72d73 2121 * Removed -h because the user already knows that option. Others? */
fb73857a 2122
76e3520e 2123 static char *usage_msg[] = {
fb73857a
PP
2124"-0[octal] specify record separator (\\0, if no argument)",
2125"-a autosplit mode with -n or -p (splits $_ into @F)",
46487f74 2126"-C enable native wide character system interfaces",
1950ee41 2127"-c check syntax only (runs BEGIN and CHECK blocks)",
aac3bd0d
GS
2128"-d[:debugger] run program under debugger",
2129"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2130"-e 'command' one line of program (several -e's allowed, omit programfile)",
2131"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2132"-i[extension] edit <> files in place (makes backup if extension supplied)",
2133"-Idirectory specify @INC/#include directory (several -I's allowed)",
fb73857a 2134"-l[octal] enable line ending processing, specifies line terminator",
aac3bd0d
GS
2135"-[mM][-]module execute `use/no module...' before executing program",
2136"-n assume 'while (<>) { ... }' loop around program",
2137"-p assume loop like -n but print line also, like sed",
2138"-P run program through C preprocessor before compilation",
2139"-s enable rudimentary parsing for switches after programfile",
2140"-S look for programfile using PATH environment variable",
2141"-T enable tainting checks",
9cbc33e8 2142"-t enable tainting warnings",
aac3bd0d 2143"-u dump core after parsing program",
fb73857a 2144"-U allow unsafe operations",
aac3bd0d
GS
2145"-v print version, subversion (includes VERY IMPORTANT perl info)",
2146"-V[:variable] print configuration summary (or a single Config.pm variable)",
2147"-w enable many useful warnings (RECOMMENDED)",
3c0facb2
GS
2148"-W enable all warnings",
2149"-X disable all warnings",
fb73857a
PP
2150"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2151"\n",
2152NULL
2153};
76e3520e 2154 char **p = usage_msg;
fb73857a 2155
b0e47665
GS
2156 PerlIO_printf(PerlIO_stdout(),
2157 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2158 name);
fb73857a 2159 while (*p)
b0e47665 2160 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2161}
2162
79072805
LW
2163/* This routine handles any switches that can be given during run */
2164
2165char *
864dbfa3 2166Perl_moreswitches(pTHX_ char *s)
79072805 2167{
ba210ebe 2168 STRLEN numlen;
c07a80fd 2169 U32 rschar;
79072805
LW
2170
2171 switch (*s) {
2172 case '0':
a863c7d1 2173 {
53305cf1
NC
2174 I32 flags = 0;
2175 numlen = 4;
2176 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
8bfdd7d9 2177 SvREFCNT_dec(PL_rs);
c07a80fd 2178 if (rschar & ~((U8)~0))
8bfdd7d9 2179 PL_rs = &PL_sv_undef;
c07a80fd 2180 else if (!rschar && numlen >= 2)
8bfdd7d9 2181 PL_rs = newSVpvn("", 0);
c07a80fd 2182 else {
eb160463 2183 char ch = (char)rschar;
8bfdd7d9 2184 PL_rs = newSVpvn(&ch, 1);
79072805
LW
2185 }
2186 return s + numlen;
a863c7d1 2187 }
46487f74 2188 case 'C':
a05d7ebb
JH
2189 s++;
2190 PL_unicode = parse_unicode_opts(&s);
46487f74 2191 return s;
2304df62 2192 case 'F':
3280af22 2193 PL_minus_F = TRUE;
ebce5377
RGS
2194 PL_splitstr = ++s;
2195 while (*s && !isSPACE(*s)) ++s;
2196 *s = '\0';
2197 PL_splitstr = savepv(PL_splitstr);
2304df62 2198 return s;
79072805 2199 case 'a':
3280af22 2200 PL_minus_a = TRUE;
79072805
LW
2201 s++;
2202 return s;
2203 case 'c':
3280af22 2204 PL_minus_c = TRUE;
79072805
LW
2205 s++;
2206 return s;
2207 case 'd':
bbce6d69 2208 forbid_setid("-d");
4633a7c4 2209 s++;
70c94a19
RR
2210 /* The following permits -d:Mod to accepts arguments following an =
2211 in the fashion that -MSome::Mod does. */
2212 if (*s == ':' || *s == '=') {
2213 char *start;
2214 SV *sv;
2215 sv = newSVpv("use Devel::", 0);
2216 start = ++s;
2217 /* We now allow -d:Module=Foo,Bar */
2218 while(isALNUM(*s) || *s==':') ++s;
2219 if (*s != '=')
2220 sv_catpv(sv, start);
2221 else {
2222 sv_catpvn(sv, start, s-start);
2223 sv_catpv(sv, " split(/,/,q{");
2224 sv_catpv(sv, ++s);
2225 sv_catpv(sv, "})");
2226 }
4633a7c4 2227 s += strlen(s);
70c94a19 2228 my_setenv("PERL5DB", SvPV(sv, PL_na));
4633a7c4 2229 }
ed094faf 2230 if (!PL_perldb) {
3280af22 2231 PL_perldb = PERLDB_ALL;
a0d0e21e 2232 init_debugger();
ed094faf 2233 }
79072805
LW
2234 return s;
2235 case 'D':
0453d815 2236 {
79072805 2237#ifdef DEBUGGING
bbce6d69 2238 forbid_setid("-D");
79072805 2239 if (isALPHA(s[1])) {
04932ac8 2240 /* if adding extra options, remember to update DEBUG_MASK */
7bab3ede 2241 static char debopts[] = "psltocPmfrxu HXDSTRJvC";
79072805
LW
2242 char *d;
2243
93a17b20 2244 for (s++; *s && (d = strchr(debopts,*s)); s++)
3280af22 2245 PL_debug |= 1 << (d - debopts);
79072805
LW
2246 }
2247 else {
3280af22 2248 PL_debug = atoi(s+1);
79072805
LW
2249 for (s++; isDIGIT(*s); s++) ;
2250 }
2ac72d6e 2251#ifdef EBCDIC
12a43e32
JH
2252 if (DEBUG_p_TEST_ && ckWARN_d(WARN_DEBUGGING))
2253 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2254 "-Dp not implemented on this platform\n");
2255#endif
aea4f609 2256 PL_debug |= DEBUG_TOP_FLAG;
12a43e32 2257#else /* !DEBUGGING */
0453d815 2258 if (ckWARN_d(WARN_DEBUGGING))
9014280d 2259 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
0453d815 2260 "Recompile perl with -DDEBUGGING to use -D switch\n");
a0d0e21e 2261 for (s++; isALNUM(*s); s++) ;
79072805
LW
2262#endif
2263 /*SUPPRESS 530*/
2264 return s;
0453d815 2265 }
4633a7c4 2266 case 'h':
ac27b0f5 2267 usage(PL_origargv[0]);
7ca617d0 2268 my_exit(0);
79072805 2269 case 'i':
3280af22
NIS
2270 if (PL_inplace)
2271 Safefree(PL_inplace);
c030f24b
GH
2272#if defined(__CYGWIN__) /* do backup extension automagically */
2273 if (*(s+1) == '\0') {
2274 PL_inplace = savepv(".bak");
2275 return s+1;
2276 }
2277#endif /* __CYGWIN__ */
3280af22 2278 PL_inplace = savepv(s+1);
79072805 2279 /*SUPPRESS 530*/
3280af22 2280 for (s = PL_inplace; *s && !isSPACE(*s); s++) ;
7b8d334a 2281 if (*s) {
fb73857a 2282 *s++ = '\0';
7b8d334a
GS
2283 if (*s == '-') /* Additional switches on #! line. */
2284 s++;
2285 }
fb73857a 2286 return s;
4e49a025 2287 case 'I': /* -I handled both here and in parse_body() */
bbce6d69 2288 forbid_setid("-I");
fb73857a
PP
2289 ++s;
2290 while (*s && isSPACE(*s))
2291 ++s;
2292 if (*s) {
774d564b 2293 char *e, *p;
0df16ed7
GS
2294 p = s;
2295 /* ignore trailing spaces (possibly followed by other switches) */
2296 do {
2297 for (e = p; *e && !isSPACE(*e); e++) ;
2298 p = e;
2299 while (isSPACE(*p))
2300 p++;
2301 } while (*p && *p != '-');
2302 e = savepvn(s, e-s);
574c798a 2303 incpush(e, TRUE, TRUE, FALSE);
0df16ed7
GS
2304 Safefree(e);
2305 s = p;
2306 if (*s == '-')
2307 s++;
79072805
LW
2308 }
2309 else
a67e862a 2310 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 2311 return s;
79072805 2312 case 'l':
3280af22 2313 PL_minus_l = TRUE;
79072805 2314 s++;
7889fe52
NIS
2315 if (PL_ors_sv) {
2316 SvREFCNT_dec(PL_ors_sv);
2317 PL_ors_sv = Nullsv;
2318 }
79072805 2319 if (isDIGIT(*s)) {
53305cf1 2320 I32 flags = 0;
7889fe52 2321 PL_ors_sv = newSVpvn("\n",1);
53305cf1
NC
2322 numlen = 3 + (*s == '0');
2323 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
2324 s += numlen;
2325 }
2326 else {
8bfdd7d9 2327 if (RsPARA(PL_rs)) {
7889fe52
NIS
2328 PL_ors_sv = newSVpvn("\n\n",2);
2329 }
2330 else {
8bfdd7d9 2331 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 2332 }
79072805
LW
2333 }
2334 return s;
06492da6
SF
2335 case 'A':
2336 forbid_setid("-A");
930366bd
RGS
2337 if (!PL_preambleav)
2338 PL_preambleav = newAV();
06492da6 2339 if (*++s) {
930366bd 2340 SV *sv = newSVpvn("use assertions::activate split(/,/,q{",37);
06492da6
SF
2341 sv_catpv(sv,s);
2342 sv_catpv(sv,"})");
2343 s+=strlen(s);
06492da6
SF
2344 av_push(PL_preambleav, sv);
2345 }
2346 else
930366bd 2347 av_push(PL_preambleav, newSVpvn("use assertions::activate",24));
06492da6 2348 return s;
1a30305b 2349 case 'M':
bbce6d69 2350 forbid_setid("-M"); /* XXX ? */
1a30305b
PP
2351 /* FALL THROUGH */
2352 case 'm':
bbce6d69 2353 forbid_setid("-m"); /* XXX ? */
1a30305b 2354 if (*++s) {
a5f75d66 2355 char *start;
11343788 2356 SV *sv;
a5f75d66
AD
2357 char *use = "use ";
2358 /* -M-foo == 'no foo' */
2359 if (*s == '-') { use = "no "; ++s; }
11343788 2360 sv = newSVpv(use,0);
a5f75d66 2361 start = s;
1a30305b 2362 /* We allow -M'Module qw(Foo Bar)' */
c07a80fd
PP
2363 while(isALNUM(*s) || *s==':') ++s;
2364 if (*s != '=') {
11343788 2365 sv_catpv(sv, start);
c07a80fd
PP
2366 if (*(start-1) == 'm') {
2367 if (*s != '\0')
cea2e8a9 2368 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
11343788 2369 sv_catpv( sv, " ()");
c07a80fd
PP
2370 }
2371 } else {
6df41af2 2372 if (s == start)
be98fb35
GS
2373 Perl_croak(aTHX_ "Module name required with -%c option",
2374 s[-1]);
11343788
MB
2375 sv_catpvn(sv, start, s-start);
2376 sv_catpv(sv, " split(/,/,q{");
2377 sv_catpv(sv, ++s);
2378 sv_catpv(sv, "})");
c07a80fd 2379 }
1a30305b 2380 s += strlen(s);
5c831c24 2381 if (!PL_preambleav)
3280af22
NIS
2382 PL_preambleav = newAV();
2383 av_push(PL_preambleav, sv);
1a30305b
PP
2384 }
2385 else
cea2e8a9 2386 Perl_croak(aTHX_ "No space allowed after -%c", *(s-1));
1a30305b 2387 return s;
79072805 2388 case 'n':
3280af22 2389 PL_minus_n = TRUE;
79072805
LW
2390 s++;
2391 return s;
2392 case 'p':
3280af22 2393 PL_minus_p = TRUE;
79072805
LW
2394 s++;
2395 return s;
2396 case 's':
bbce6d69 2397 forbid_setid("-s");
3280af22 2398 PL_doswitches = TRUE;
79072805
LW
2399 s++;
2400 return s;
6537fe72
MS
2401 case 't':
2402 if (!PL_tainting)
2403 Perl_croak(aTHX_ "Too late for \"-t\" option");
2404 s++;
2405 return s;
463ee0b2 2406 case 'T':
3280af22 2407 if (!PL_tainting)
cea2e8a9 2408 Perl_croak(aTHX_ "Too late for \"-T\" option");
463ee0b2
LW
2409 s++;
2410 return s;
79072805 2411 case 'u':
bf4acbe4
GS
2412#ifdef MACOS_TRADITIONAL
2413 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
2414#endif
3280af22 2415 PL_do_undump = TRUE;
79072805
LW
2416 s++;
2417 return s;
2418 case 'U':
3280af22 2419 PL_unsafe = TRUE;
79072805
LW
2420 s++;
2421 return s;
2422 case 'v':
8e9464f1 2423#if !defined(DGUX)
b0e47665 2424 PerlIO_printf(PerlIO_stdout(),
d2560b70 2425 Perl_form(aTHX_ "\nThis is perl, v%"VDf" built for %s",
b0e47665 2426 PL_patchlevel, ARCHNAME));
8e9464f1
JH
2427#else /* DGUX */
2428/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
2429 PerlIO_printf(PerlIO_stdout(),
2430 Perl_form(aTHX_ "\nThis is perl, version %vd\n", PL_patchlevel));
2431 PerlIO_printf(PerlIO_stdout(),
2432 Perl_form(aTHX_ " built under %s at %s %s\n",
2433 OSNAME, __DATE__, __TIME__));
2434 PerlIO_printf(PerlIO_stdout(),
2435 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 2436 OSVERS));
8e9464f1
JH
2437#endif /* !DGUX */
2438
fb73857a
PP
2439#if defined(LOCAL_PATCH_COUNT)
2440 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
2441 PerlIO_printf(PerlIO_stdout(),
2442 "\n(with %d registered patch%s, "
2443 "see perl -V for more detail)",
2444 (int)LOCAL_PATCH_COUNT,
2445 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 2446#endif
1a30305b 2447
b0e47665 2448 PerlIO_printf(PerlIO_stdout(),
4c79ee7a 2449 "\n\nCopyright 1987-2003, Larry Wall\n");
eae9c151
JH
2450#ifdef MACOS_TRADITIONAL
2451 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2452 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 2453 "maintained by Chris Nandor\n");
eae9c151 2454#endif
79072805 2455#ifdef MSDOS
b0e47665
GS
2456 PerlIO_printf(PerlIO_stdout(),
2457 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
2458#endif
2459#ifdef DJGPP
b0e47665
GS
2460 PerlIO_printf(PerlIO_stdout(),
2461 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
2462 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 2463#endif
79072805 2464#ifdef OS2
b0e47665
GS
2465 PerlIO_printf(PerlIO_stdout(),
2466 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 2467 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 2468#endif
79072805 2469#ifdef atarist
b0e47665
GS
2470 PerlIO_printf(PerlIO_stdout(),
2471 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 2472#endif
a3f9223b 2473#ifdef __BEOS__
b0e47665
GS
2474 PerlIO_printf(PerlIO_stdout(),
2475 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 2476#endif
1d84e8df 2477#ifdef MPE
b0e47665 2478 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2479 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2002\n");
1d84e8df 2480#endif
9d116dd7 2481#ifdef OEMVS
b0e47665
GS
2482 PerlIO_printf(PerlIO_stdout(),
2483 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 2484#endif
495c5fdc 2485#ifdef __VOS__
b0e47665 2486 PerlIO_printf(PerlIO_stdout(),
94efb9fb 2487 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 2488#endif
092bebab 2489#ifdef __OPEN_VM
b0e47665
GS
2490 PerlIO_printf(PerlIO_stdout(),
2491 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 2492#endif
a1a0e61e 2493#ifdef POSIX_BC
b0e47665
GS
2494 PerlIO_printf(PerlIO_stdout(),
2495 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 2496#endif
61ae2fbf 2497#ifdef __MINT__
b0e47665
GS
2498 PerlIO_printf(PerlIO_stdout(),
2499 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 2500#endif
f83d2536 2501#ifdef EPOC
b0e47665 2502 PerlIO_printf(PerlIO_stdout(),
be3c0a43 2503 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 2504#endif
e1caacb4 2505#ifdef UNDER_CE
b475b3e6
JH
2506 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
2507 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
2508 wce_hitreturn();
2509#endif
baed7233
DL
2510#ifdef BINARY_BUILD_NOTICE
2511 BINARY_BUILD_NOTICE;
2512#endif
b0e47665
GS
2513 PerlIO_printf(PerlIO_stdout(),
2514 "\n\
79072805 2515Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 2516GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687
GS
2517Complete documentation for Perl, including FAQ lists, should be found on\n\
2518this system using `man perl' or `perldoc perl'. If you have access to the\n\
2519Internet, point your browser at http://www.perl.com/, the Perl Home Page.\n\n");
7ca617d0 2520 my_exit(0);
79072805 2521 case 'w':
599cee73 2522 if (! (PL_dowarn & G_WARN_ALL_MASK))
ac27b0f5 2523 PL_dowarn |= G_WARN_ON;
599cee73
PM
2524 s++;
2525 return s;
2526 case 'W':
ac27b0f5 2527 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d
MS
2528 if (!specialWARN(PL_compiling.cop_warnings))
2529 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2530 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
2531 s++;
2532 return s;
2533 case 'X':
ac27b0f5 2534 PL_dowarn = G_WARN_ALL_OFF;
317ea90d
MS
2535 if (!specialWARN(PL_compiling.cop_warnings))
2536 SvREFCNT_dec(PL_compiling.cop_warnings);
d3a7d8c7 2537 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
2538 s++;
2539 return s;
a0d0e21e 2540 case '*':
79072805
LW
2541 case ' ':
2542 if (s[1] == '-') /* Additional switches on #! line. */
2543 return s+2;
2544 break;
a0d0e21e 2545 case '-':
79072805 2546 case 0:
51882d45 2547#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
2548 case '\r':
2549#endif
79072805
LW
2550 case '\n':
2551 case '\t':
2552 break;
aa689395
PP
2553#ifdef ALTERNATE_SHEBANG
2554 case 'S': /* OS/2 needs -S on "extproc" line. */
2555 break;
2556#endif
a0d0e21e 2557 case 'P':
3280af22 2558 if (PL_preprocess)
a0d0e21e
LW
2559 return s+1;
2560 /* FALL THROUGH */
79072805 2561 default:
cea2e8a9 2562 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805
LW
2563 }
2564 return Nullch;
2565}
2566
2567/* compliments of Tom Christiansen */
2568
2569/* unexec() can be found in the Gnu emacs distribution */
ee580363 2570/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
2571
2572void
864dbfa3 2573Perl_my_unexec(pTHX)
79072805
LW
2574{
2575#ifdef UNEXEC
46fc3d4c
PP
2576 SV* prog;
2577 SV* file;
ee580363 2578 int status = 1;
79072805
LW
2579 extern int etext;
2580
ee580363 2581 prog = newSVpv(BIN_EXP, 0);
46fc3d4c 2582 sv_catpv(prog, "/perl");
6b88bc9c 2583 file = newSVpv(PL_origfilename, 0);
46fc3d4c 2584 sv_catpv(file, ".perldump");
79072805 2585
ee580363
GS
2586 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
2587 /* unexec prints msg to stderr in case of failure */
6ad3d225 2588 PerlProc_exit(status);
79072805 2589#else
a5f75d66
AD
2590# ifdef VMS
2591# include <lib$routines.h>
2592 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
aa689395 2593# else
79072805 2594 ABORT(); /* for use with undump */
aa689395 2595# endif
a5f75d66 2596#endif
79072805
LW
2597}
2598
cb68f92d
GS
2599/* initialize curinterp */
2600STATIC void
cea2e8a9 2601S_init_interp(pTHX)
cb68f92d
GS
2602{
2603
acfe0abc
GS
2604#ifdef MULTIPLICITY
2605# define PERLVAR(var,type)
2606# define PERLVARA(var,n,type)
2607# if defined(PERL_IMPLICIT_CONTEXT)
2608# if defined(USE_5005THREADS)
2609# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
c5be433b 2610# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
acfe0abc
GS
2611# else /* !USE_5005THREADS */
2612# define PERLVARI(var,type,init) aTHX->var = init;
2613# define PERLVARIC(var,type,init) aTHX->var = init;
2614# endif /* USE_5005THREADS */
3967c732 2615# else
acfe0abc
GS
2616# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
2617# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 2618# endif
acfe0abc
GS
2619# include "intrpvar.h"
2620# ifndef USE_5005THREADS
2621# include "thrdvar.h"
2622# endif
2623# undef PERLVAR
2624# undef PERLVARA
2625# undef PERLVARI
2626# undef PERLVARIC
2627#else
2628# define PERLVAR(var,type)
2629# define PERLVARA(var,n,type)
2630# define PERLVARI(var,type,init) PL_##var = init;
2631# define PERLVARIC(var,type,init) PL_##var = init;
2632# include "intrpvar.h"
2633# ifndef USE_5005THREADS
2634# include "thrdvar.h"
2635# endif
2636# undef PERLVAR
2637# undef PERLVARA
2638# undef PERLVARI
2639# undef PERLVARIC
cb68f92d
GS
2640#endif
2641
cb68f92d
GS
2642}
2643
76e3520e 2644STATIC void
cea2e8a9 2645S_init_main_stash(pTHX)
79072805 2646{
463ee0b2 2647 GV *gv;
6e72f9df 2648
3280af22 2649 PL_curstash = PL_defstash = newHV();
79cb57f6 2650 PL_curstname = newSVpvn("main",4);
adbc6bb1
LW
2651 gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
2652 SvREFCNT_dec(GvHV(gv));
3280af22 2653 GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash);
463ee0b2 2654 SvREADONLY_on(gv);
3280af22
NIS
2655 HvNAME(PL_defstash) = savepv("main");
2656 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
2657 GvMULTI_on(PL_incgv);
2658 PL_hintgv = gv_fetchpv("\010",TRUE, SVt_PV); /* ^H */
2659 GvMULTI_on(PL_hintgv);
2660 PL_defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
2661 PL_errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
2662 GvMULTI_on(PL_errgv);
2663 PL_replgv = gv_fetchpv("\022", TRUE, SVt_PV); /* ^R */
2664 GvMULTI_on(PL_replgv);
cea2e8a9 2665 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
38a03e6e
MB
2666 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
2667 sv_setpvn(ERRSV, "", 0);
3280af22 2668 PL_curstash = PL_defstash;
11faa288 2669 CopSTASH_set(&PL_compiling, PL_defstash);
ed094faf 2670 PL_debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
3280af22 2671 PL_globalstash = GvHV(gv_fetchpv("CORE::GLOBAL::", GV_ADDMULTI, SVt_PVHV));
4633a7c4 2672 /* We must init $/ before switches are processed. */
864dbfa3 2673 sv_setpvn(get_sv("/", TRUE), "\n", 1);
79072805
LW
2674}
2675
76e3520e 2676STATIC void
cea2e8a9 2677S_open_script(pTHX_ char *scriptname, bool dosearch, SV *sv, int *fdscript)
79072805 2678{
1b24ed4b
MS
2679 char *quote;
2680 char *code;
2681 char *cpp_discard_flag;
2682 char *perl;
2683
6c4ab083 2684 *fdscript = -1;
79072805 2685
3280af22
NIS
2686 if (PL_e_script) {
2687 PL_origfilename = savepv("-e");
96436eeb 2688 }
6c4ab083
GS
2689 else {
2690 /* if find_script() returns, it returns a malloc()-ed value */
3280af22 2691 PL_origfilename = scriptname = find_script(scriptname, dosearch, NULL, 1);
6c4ab083
GS
2692
2693 if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
2694 char *s = scriptname + 8;
2695 *fdscript = atoi(s);
2696 while (isDIGIT(*s))
2697 s++;
2698 if (*s) {
2699 scriptname = savepv(s + 1);
3280af22
NIS
2700 Safefree(PL_origfilename);
2701 PL_origfilename = scriptname;
6c4ab083
GS
2702 }
2703 }
2704 }
2705
05ec9bb3 2706 CopFILE_free(PL_curcop);
57843af0 2707 CopFILE_set(PL_curcop, PL_origfilename);
3280af22 2708 if (strEQ(PL_origfilename,"-"))
79072805 2709 scriptname = "";
01f988be 2710 if (*fdscript >= 0) {
3280af22 2711 PL_rsfp = PerlIO_fdopen(*fdscript,PERL_SCRIPT_MODE);
1b24ed4b
MS
2712# if defined(HAS_FCNTL) && defined(F_SETFD)
2713 if (PL_rsfp)
2714 /* ensure close-on-exec */
2715 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2716# endif
96436eeb 2717 }
3280af22 2718 else if (PL_preprocess) {
46fc3d4c 2719 char *cpp_cfg = CPPSTDIN;
79cb57f6 2720 SV *cpp = newSVpvn("",0);
46fc3d4c
PP
2721 SV *cmd = NEWSV(0,0);
2722
2723 if (strEQ(cpp_cfg, "cppstdin"))
cea2e8a9 2724 Perl_sv_catpvf(aTHX_ cpp, "%s/", BIN_EXP);
46fc3d4c 2725 sv_catpv(cpp, cpp_cfg);
79072805 2726
1b24ed4b
MS
2727# ifndef VMS
2728 sv_catpvn(sv, "-I", 2);
2729 sv_catpv(sv,PRIVLIB_EXP);
2730# endif
46fc3d4c 2731
14953ddc
MB
2732 DEBUG_P(PerlIO_printf(Perl_debug_log,
2733 "PL_preprocess: scriptname=\"%s\", cpp=\"%s\", sv=\"%s\", CPPMINUS=\"%s\"\n",
2734 scriptname, SvPVX (cpp), SvPVX (sv), CPPMINUS));
1b24ed4b
MS
2735
2736# if defined(MSDOS) || defined(WIN32) || defined(VMS)
2737 quote = "\"";
2738# else
2739 quote = "'";
2740# endif
2741
2742# ifdef VMS
2743 cpp_discard_flag = "";
2744# else
2745 cpp_discard_flag = "-C";
2746# endif
2747
2748# ifdef OS2
2749 perl = os2_execname(aTHX);
2750# else
2751 perl = PL_origargv[0];
2752# endif
2753
2754
2755 /* This strips off Perl comments which might interfere with
62375a60
NIS
2756 the C pre-processor, including #!. #line directives are
2757 deliberately stripped to avoid confusion with Perl's version
1b24ed4b
MS
2758 of #line. FWP played some golf with it so it will fit
2759 into VMS's 255 character buffer.
2760 */
2761 if( PL_doextract )
2762 code = "(1../^#!.*perl/i)|/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2763 else
2764 code = "/^\\s*#(?!\\s*((ifn?|un)def|(el|end)?if|define|include|else|error|pragma)\\b)/||!($|=1)||print";
2765
2766 Perl_sv_setpvf(aTHX_ cmd, "\
2767%s -ne%s%s%s %s | %"SVf" %s %"SVf" %s",
62375a60 2768 perl, quote, code, quote, scriptname, cpp,
1b24ed4b
MS
2769 cpp_discard_flag, sv, CPPMINUS);
2770
3280af22 2771 PL_doextract = FALSE;
1b24ed4b
MS
2772# ifdef IAMSUID /* actually, this is caught earlier */
2773 if (PL_euid != PL_uid && !PL_euid) { /* if running suidperl */
2774# ifdef HAS_SETEUID
2775 (void)seteuid(PL_uid); /* musn't stay setuid root */
2776# else
2777# ifdef HAS_SETREUID
2778 (void)setreuid((Uid_t)-1, PL_uid);
2779# else
2780# ifdef HAS_SETRESUID
2781 (void)setresuid((Uid_t)-1, PL_uid, (Uid_t)-1);
2782# else
2783 PerlProc_setuid(PL_uid);
2784# endif
2785# endif
2786# endif
b28d0864 2787 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 2788 Perl_croak(aTHX_ "Can't do seteuid!\n");
79072805 2789 }
1b24ed4b 2790# endif /* IAMSUID */
0a6c758d 2791
62375a60
NIS
2792 DEBUG_P(PerlIO_printf(Perl_debug_log,
2793 "PL_preprocess: cmd=\"%s\"\n",
0a6c758d
MS
2794 SvPVX(cmd)));
2795
3280af22 2796 PL_rsfp = PerlProc_popen(SvPVX(cmd), "r");
46fc3d4c
PP
2797 SvREFCNT_dec(cmd);
2798 SvREFCNT_dec(cpp);
79072805
LW
2799 }
2800 else if (!*scriptname) {
bbce6d69 2801 forbid_setid("program input from stdin");
3280af22 2802 PL_rsfp = PerlIO_stdin();
79072805 2803 }
96436eeb 2804 else {
3280af22 2805 PL_rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
1b24ed4b
MS
2806# if defined(HAS_FCNTL) && defined(F_SETFD)
2807 if (PL_rsfp)
2808 /* ensure close-on-exec */
2809 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,1);
2810# endif
96436eeb 2811 }
3280af22 2812 if (!PL_rsfp) {
1b24ed4b
MS
2813# ifdef DOSUID
2814# ifndef IAMSUID /* in case script is not readable before setuid */
2815 if (PL_euid &&
2816 PerlLIO_stat(CopFILE(PL_curcop),&PL_statbuf) >= 0 &&
2817 PL_statbuf.st_mode & (S_ISUID|S_ISGID))
2818 {
2819 /* try again */
62375a60
NIS
2820 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT,
2821 BIN_EXP, (int)PERL_REVISION,
1b24ed4b
MS
2822 (int)PERL_VERSION,
2823 (int)PERL_SUBVERSION), PL_origargv);
2824 Perl_croak(aTHX_ "Can't do setuid\n");
2825 }
2826# endif
2827# endif
2828# ifdef IAMSUID
2829 errno = EPERM;
2830 Perl_croak(aTHX_ "Can't open perl script: %s\n",
2831 Strerror(errno));
2832# else
2833 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
2834 CopFILE(PL_curcop), Strerror(errno));
2835# endif
13281fa4 2836 }
79072805 2837}
8d063cd8 2838
7b89560d
JH
2839/* Mention
2840 * I_SYSSTATVFS HAS_FSTATVFS
2841 * I_SYSMOUNT
c890dc6c 2842 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH
2843 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
2844 * here so that metaconfig picks them up. */
2845
104d25b7 2846#ifdef IAMSUID
864dbfa3 2847STATIC int
e688b231 2848S_fd_on_nosuid_fs(pTHX_ int fd)
104d25b7 2849{
0545a864
JH
2850 int check_okay = 0; /* able to do all the required sys/libcalls */
2851 int on_nosuid = 0; /* the fd is on a nosuid fs */
104d25b7 2852/*
ad27e871 2853 * Preferred order: fstatvfs(), fstatfs(), ustat()+getmnt(), getmntent().
e688b231 2854 * fstatvfs() is UNIX98.
0545a864 2855 * fstatfs() is 4.3 BSD.
ad27e871 2856 * ustat()+getmnt() is pre-4.3 BSD.
0545a864
JH
2857 * getmntent() is O(number-of-mounted-filesystems) and can hang on
2858 * an irrelevant filesystem while trying to reach the right one.
104d25b7
JH
2859 */
2860
6439433f
JH
2861#undef FD_ON_NOSUID_CHECK_OKAY /* found the syscalls to do the check? */
2862
2863# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2864 defined(HAS_FSTATVFS)
2865# define FD_ON_NOSUID_CHECK_OKAY
104d25b7 2866 struct statvfs stfs;
6439433f 2867
104d25b7
JH
2868 check_okay = fstatvfs(fd, &stfs) == 0;
2869 on_nosuid = check_okay && (stfs.f_flag & ST_NOSUID);
6439433f 2870# endif /* fstatvfs */
ac27b0f5 2871
6439433f
JH
2872# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2873 defined(PERL_MOUNT_NOSUID) && \
2874 defined(HAS_FSTATFS) && \
2875 defined(HAS_STRUCT_STATFS) && \
2876 defined(HAS_STRUCT_STATFS_F_FLAGS)
2877# define FD_ON_NOSUID_CHECK_OKAY
e688b231 2878 struct statfs stfs;
6439433f 2879
104d25b7 2880 check_okay = fstatfs(fd, &stfs) == 0;
104d25b7 2881 on_nosuid = check_okay && (stfs.f_flags & PERL_MOUNT_NOSUID);
6439433f
JH
2882# endif /* fstatfs */
2883
2884# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2885 defined(PERL_MOUNT_NOSUID) && \
2886 defined(HAS_FSTAT) && \
2887 defined(HAS_USTAT) && \
2888 defined(HAS_GETMNT) && \
2889 defined(HAS_STRUCT_FS_DATA) && \
2890 defined(NOSTAT_ONE)
2891# define FD_ON_NOSUID_CHECK_OKAY
c623ac67 2892 Stat_t fdst;
6439433f 2893
0545a864 2894 if (fstat(fd, &fdst) == 0) {
6439433f
JH
2895 struct ustat us;
2896 if (ustat(fdst.st_dev, &us) == 0) {
2897 struct fs_data fsd;
2898 /* NOSTAT_ONE here because we're not examining fields which
2899 * vary between that case and STAT_ONE. */
ad27e871 2900 if (getmnt((int*)0, &fsd, (int)0, NOSTAT_ONE, us.f_fname) == 0) {
6439433f
JH
2901 size_t cmplen = sizeof(us.f_fname);
2902 if (sizeof(fsd.fd_req.path) < cmplen)
2903 cmplen = sizeof(fsd.fd_req.path);
2904 if (strnEQ(fsd.fd_req.path, us.f_fname, cmplen) &&
2905 fdst.st_dev == fsd.fd_req.dev) {
2906 check_okay = 1;
2907 on_nosuid = fsd.fd_req.flags & PERL_MOUNT_NOSUID;
2908 }
2909 }
2910 }
2911 }
0545a864 2912 }
6439433f
JH
2913# endif /* fstat+ustat+getmnt */
2914
2915# if !defined(FD_ON_NOSUID_CHECK_OKAY) && \
2916 defined(HAS_GETMNTENT) && \
2917 defined(HAS_HASMNTOPT) && \
2918 defined(MNTOPT_NOSUID)
2919# define FD_ON_NOSUID_CHECK_OKAY
2920 FILE *mtab = fopen("/etc/mtab", "r");
2921 struct mntent *entry;
c623ac67 2922 Stat_t stb, fsb;
104d25b7
JH
2923
2924 if (mtab && (fstat(fd, &stb) == 0)) {
6439433f
JH
2925 while (entry = getmntent(mtab)) {
2926 if (stat(entry->mnt_dir, &fsb) == 0
2927 && fsb.st_dev == stb.st_dev)
2928 {
2929 /* found the filesystem */
2930 check_okay = 1;
2931 if (hasmntopt(entry, MNTOPT_NOSUID))
2932 on_nosuid = 1;
2933 break;
2934 } /* A single fs may well fail its stat(). */
2935 }
104d25b7
JH
2936 }
2937 if (mtab)
6439433f
JH
2938 fclose(mtab);
2939# endif /* getmntent+hasmntopt */
0545a864 2940
ac27b0f5 2941 if (!check_okay)
0545a864 2942 Perl_croak(aTHX_ "Can't check filesystem of script \"%s\" for nosuid", PL_origfilename);
104d25b7
JH
2943 return on_nosuid;
2944}
2945#endif /* IAMSUID */
2946
76e3520e 2947STATIC void
cea2e8a9 2948S_validate_suid(pTHX_ char *validarg, char *scriptname, int fdscript)
79072805 2949{
155aba94 2950#ifdef IAMSUID
96436eeb 2951 int which;
155aba94 2952#endif
96436eeb 2953
13281fa4
LW
2954 /* do we need to emulate setuid on scripts? */
2955
2956 /* This code is for those BSD systems that have setuid #! scripts disabled
2957 * in the kernel because of a security problem. Merely defining DOSUID
2958 * in perl will not fix that problem, but if you have disabled setuid
2959 * scripts in the kernel, this will attempt to emulate setuid and setgid
2960 * on scripts that have those now-otherwise-useless bits set. The setuid
27e2fb84
LW
2961 * root version must be called suidperl or sperlN.NNN. If regular perl
2962 * discovers that it has opened a setuid script, it calls suidperl with
2963 * the same argv that it had. If suidperl finds that the script it has
2964 * just opened is NOT setuid root, it sets the effective uid back to the
2965 * uid. We don't just make perl setuid root because that loses the
2966 * effective uid we had before invoking perl, if it was different from the
2967 * uid.
13281fa4
LW
2968 *
2969 * DOSUID must be defined in both perl and suidperl, and IAMSUID must
2970 * be defined in suidperl only. suidperl must be setuid root. The
2971 * Configure script will set this up for you if you want it.
2972 */
a687059c 2973
13281fa4 2974#ifdef DOSUID
6e72f9df 2975 char *s, *s2;
a0d0e21e 2976
b28d0864 2977 if (PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf) < 0) /* normal stat is insecure */
cea2e8a9 2978 Perl_croak(aTHX_ "Can't stat script \"%s\"",PL_origfilename);
b28d0864 2979 if (fdscript < 0 && PL_statbuf.st_mode & (S_ISUID|S_ISGID)) {
79072805 2980 I32 len;
2d8e6c8d 2981 STRLEN n_a;
13281fa4 2982
a687059c 2983#ifdef IAMSUID
fe14fcc3 2984#ifndef HAS_SETREUID
a687059c
LW
2985 /* On this access check to make sure the directories are readable,
2986 * there is actually a small window that the user could use to make
2987 * filename point to an accessible directory. So there is a faint
2988 * chance that someone could execute a setuid script down in a
2989 * non-accessible directory. I don't know what to do about that.
2990 * But I don't think it's too important. The manual lies when
2991 * it says access() is useful in setuid programs.
2992 */
cc49e20b 2993 if (PerlLIO_access(CopFILE(PL_curcop),1)) /*double check*/
cea2e8a9 2994 Perl_croak(aTHX_ "Permission denied");
a687059c
LW
2995#else
2996 /* If we can swap euid and uid, then we can determine access rights
2997 * with a simple stat of the file, and then compare device and
2998 * inode to make sure we did stat() on the same file we opened.
2999 * Then we just have to make sure he or she can execute it.
3000 */
3001 {
c623ac67 3002 Stat_t tmpstatbuf;
a687059c 3003
85e6fe83
LW
3004 if (
3005#ifdef HAS_SETREUID
b28d0864 3006 setreuid(PL_euid,PL_uid) < 0
a0d0e21e
LW
3007#else
3008# if HAS_SETRESUID
b28d0864 3009 setresuid(PL_euid,PL_uid,(Uid_t)-1) < 0
a0d0e21e 3010# endif
85e6fe83 3011#endif
b28d0864 3012 || PerlProc_getuid() != PL_euid || PerlProc_geteuid() != PL_uid)
cea2e8a9 3013 Perl_croak(aTHX_ "Can't swap uid and euid"); /* really paranoid */
cc49e20b 3014 if (PerlLIO_stat(CopFILE(PL_curcop),&tmpstatbuf) < 0)
cea2e8a9 3015 Perl_croak(aTHX_ "Permission denied"); /* testing full pathname here */
2bb3463c 3016#if defined(IAMSUID) && !defined(NO_NOSUID_CHECK)
e688b231 3017 if (fd_on_nosuid_fs(PerlIO_fileno(PL_rsfp)))
cea2e8a9 3018 Perl_croak(aTHX_ "Permission denied");
104d25b7 3019#endif
b28d0864
NIS
3020 if (tmpstatbuf.st_dev != PL_statbuf.st_dev ||
3021 tmpstatbuf.st_ino != PL_statbuf.st_ino) {
3022 (void)PerlIO_close(PL_rsfp);
cea2e8a9 3023 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3024 }
85e6fe83
LW
3025 if (
3026#ifdef HAS_SETREUID
b28d0864 3027 setreuid(PL_uid,PL_euid) < 0
a0d0e21e
LW
3028#else
3029# if defined(HAS_SETRESUID)
b28d0864 3030 setresuid(PL_uid,PL_euid,(Uid_t)-1) < 0
a0d0e21e 3031# endif
85e6fe83 3032#endif
b28d0864 3033 || PerlProc_getuid() != PL_uid || PerlProc_geteuid() != PL_euid)
cea2e8a9 3034 Perl_croak(aTHX_ "Can't reswap uid and euid");
b28d0864 3035 if (!cando(S_IXUSR,FALSE,&PL_statbuf)) /* can real uid exec? */
cea2e8a9 3036 Perl_croak(aTHX_ "Permission denied\n");
a687059c 3037 }
fe14fcc3 3038#endif /* HAS_SETREUID */
a687059c
LW
3039#endif /* IAMSUID */
3040
b28d0864 3041 if (!S_ISREG(PL_statbuf.st_mode))
cea2e8a9 3042 Perl_croak(aTHX_ "Permission denied");
b28d0864 3043 if (PL_statbuf.st_mode & S_IWOTH)
cea2e8a9 3044 Perl_croak(aTHX_ "Setuid/gid script is writable by world");
6b88bc9c 3045 PL_doswitches = FALSE; /* -s is insecure in suid */
57843af0 3046 CopLINE_inc(PL_curcop);
6b88bc9c 3047 if (sv_gets(PL_linestr, PL_rsfp, 0) == Nullch ||
2d8e6c8d 3048 strnNE(SvPV(PL_linestr,n_a),"#!",2) ) /* required even on Sys V */
cea2e8a9 3049 Perl_croak(aTHX_ "No #! line");
2d8e6c8d 3050 s = SvPV(PL_linestr,n_a)+2;
663a0e37 3051 if (*s == ' ') s++;
45d8adaa 3052 while (!isSPACE(*s)) s++;
2d8e6c8d 3053 for (s2 = s; (s2 > SvPV(PL_linestr,n_a)+2 &&
6e72f9df
PP
3054 (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
3055 if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
cea2e8a9 3056 Perl_croak(aTHX_ "Not a perl script");
a687059c 3057 while (*s == ' ' || *s == '\t') s++;
13281fa4
LW
3058 /*
3059 * #! arg must be what we saw above. They can invoke it by
3060 * mentioning suidperl explicitly, but they may not add any strange
3061 * arguments beyond what #! says if they do invoke suidperl that way.
3062 */
3063 len = strlen(validarg);
3064 if (strEQ(validarg," PHOOEY ") ||
45d8adaa 3065 strnNE(s,validarg,len) || !isSPACE(s[len]))
cea2e8a9 3066 Perl_croak(aTHX_ "Args must match #! line");
a687059c
LW
3067
3068#ifndef IAMSUID
b28d0864
NIS
3069 if (PL_euid != PL_uid && (PL_statbuf.st_mode & S_ISUID) &&
3070 PL_euid == PL_statbuf.st_uid)
3071 if (!PL_do_undump)
cea2e8a9 3072 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3073FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3074#endif /* IAMSUID */
13281fa4 3075
b28d0864
NIS
3076 if (PL_euid) { /* oops, we're not the setuid root perl */
3077 (void)PerlIO_close(PL_rsfp);
13281fa4 3078#ifndef IAMSUID
46fc3d4c 3079 /* try again */
a7cb1f99 3080 PerlProc_execv(Perl_form(aTHX_ "%s/sperl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3081 (int)PERL_REVISION, (int)PERL_VERSION,
3082 (int)PERL_SUBVERSION), PL_origargv);
13281fa4 3083#endif
cea2e8a9 3084 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4
LW
3085 }
3086
b28d0864 3087 if (PL_statbuf.st_mode & S_ISGID && PL_statbuf.st_gid != PL_egid) {
fe14fcc3 3088#ifdef HAS_SETEGID
b28d0864 3089 (void)setegid(PL_statbuf.st_gid);
a687059c 3090#else
fe14fcc3 3091#ifdef HAS_SETREGID
b28d0864 3092 (void)setregid((Gid_t)-1,PL_statbuf.st_gid);
85e6fe83
LW
3093#else
3094#ifdef HAS_SETRESGID
b28d0864 3095 (void)setresgid((Gid_t)-1,PL_statbuf.st_gid,(Gid_t)-1);
a687059c 3096#else
b28d0864 3097 PerlProc_setgid(PL_statbuf.st_gid);
a687059c
LW
3098#endif
3099#endif
85e6fe83 3100#endif
b28d0864 3101 if (PerlProc_getegid() != PL_statbuf.st_gid)
cea2e8a9 3102 Perl_croak(aTHX_ "Can't do setegid!\n");
83025b21 3103 }
b28d0864
NIS
3104 if (PL_statbuf.st_mode & S_ISUID) {
3105 if (PL_statbuf.st_uid != PL_euid)
fe14fcc3 3106#ifdef HAS_SETEUID
b28d0864 3107 (void)seteuid(PL_statbuf.st_uid); /* all that for this */
a687059c 3108#else
fe14fcc3 3109#ifdef HAS_SETREUID
b28d0864 3110 (void)setreuid((Uid_t)-1,PL_statbuf.st_uid);
85e6fe83
LW
3111#else
3112#ifdef HAS_SETRESUID
b28d0864 3113 (void)setresuid((Uid_t)-1,PL_statbuf.st_uid,(Uid_t)-1);
a687059c 3114#else
b28d0864 3115 PerlProc_setuid(PL_statbuf.st_uid);
a687059c
LW
3116#endif
3117#endif
85e6fe83 3118#endif
b28d0864 3119 if (PerlProc_geteuid() != PL_statbuf.st_uid)
cea2e8a9 3120 Perl_croak(aTHX_ "Can't do seteuid!\n");
a687059c 3121 }
b28d0864 3122 else if (PL_uid) { /* oops, mustn't run as root */
fe14fcc3 3123#ifdef HAS_SETEUID
b28d0864 3124 (void)seteuid((Uid_t)PL_uid);
a687059c 3125#else
fe14fcc3 3126#ifdef HAS_SETREUID
b28d0864 3127 (void)setreuid((Uid_t)-1,(Uid_t)PL_uid);
a687059c 3128#else
85e6fe83 3129#ifdef HAS_SETRESUID
b28d0864 3130 (void)setresuid((Uid_t)-1,(Uid_t)PL_uid,(Uid_t)-1);
85e6fe83 3131#else
b28d0864 3132 PerlProc_setuid((Uid_t)PL_uid);
85e6fe83 3133#endif
a687059c
LW
3134#endif
3135#endif
b28d0864 3136 if (PerlProc_geteuid() != PL_uid)
cea2e8a9 3137 Perl_croak(aTHX_ "Can't do seteuid!\n");
83025b21 3138 }
748a9306 3139 init_ids();
b28d0864 3140 if (!cando(S_IXUSR,TRUE,&PL_statbuf))
cea2e8a9 3141 Perl_croak(aTHX_ "Permission denied\n"); /* they can't do this */
13281fa4
LW
3142 }
3143#ifdef IAMSUID
6b88bc9c 3144 else if (PL_preprocess)
cea2e8a9 3145 Perl_croak(aTHX_ "-P not allowed for setuid/setgid script\n");
96436eeb 3146 else if (fdscript >= 0)
cea2e8a9 3147 Perl_croak(aTHX_ "fd script not allowed in suidperl\n");
13281fa4 3148 else
cea2e8a9 3149 Perl_croak(aTHX_ "Script is not setuid/setgid in suidperl\n");
96436eeb
PP
3150
3151 /* We absolutely must clear out any saved ids here, so we */
3152 /* exec the real perl, substituting fd script for scriptname. */
3153 /* (We pass script name as "subdir" of fd, which perl will grok.) */
b28d0864
NIS
3154 PerlIO_rewind(PL_rsfp);
3155 PerlLIO_lseek(PerlIO_fileno(PL_rsfp),(Off_t)0,0); /* just in case rewind didn't */
6b88bc9c
GS
3156 for (which = 1; PL_origargv[which] && PL_origargv[which] != scriptname; which++) ;
3157 if (!PL_origargv[which])
cea2e8a9
GS
3158 Perl_croak(aTHX_ "Permission denied");
3159 PL_origargv[which] = savepv(Perl_form(aTHX_ "/dev/fd/%d/%s",
6b88bc9c 3160 PerlIO_fileno(PL_rsfp), PL_origargv[which]));
96436eeb 3161#if defined(HAS_FCNTL) && defined(F_SETFD)
b28d0864 3162 fcntl(PerlIO_fileno(PL_rsfp),F_SETFD,0); /* ensure no close-on-exec */
96436eeb 3163#endif
a7cb1f99 3164 PerlProc_execv(Perl_form(aTHX_ "%s/perl"PERL_FS_VER_FMT, BIN_EXP,
273cf8d1
GS
3165 (int)PERL_REVISION, (int)PERL_VERSION,
3166 (int)PERL_SUBVERSION), PL_origargv);/* try again */
cea2e8a9 3167 Perl_croak(aTHX_ "Can't do setuid\n");
13281fa4 3168#endif /* IAMSUID */
a687059c 3169#else /* !DOSUID */
3280af22 3170 if (PL_euid != PL_uid || PL_egid != PL_gid) { /* (suidperl doesn't exist, in fact) */
a687059c 3171#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
b28d0864
NIS
3172 PerlLIO_fstat(PerlIO_fileno(PL_rsfp),&PL_statbuf); /* may be either wrapped or real suid */
3173 if ((PL_euid != PL_uid && PL_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
a687059c 3174 ||
b28d0864 3175 (PL_egid != PL_gid && PL_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
a687059c 3176 )
b28d0864 3177 if (!PL_do_undump)
cea2e8a9 3178 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c
LW
3179FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
3180#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
3181 /* not set-id, must be wrapped */
a687059c 3182 }
13281fa4 3183#endif /* DOSUID */
79072805 3184}
13281fa4 3185
76e3520e 3186STATIC void
cea2e8a9 3187S_find_beginning(pTHX)
79072805 3188{
6e72f9df 3189 register char *s, *s2;
e55ac0fa
HS
3190#ifdef MACOS_TRADITIONAL
3191 int maclines = 0;
3192#endif
33b78306
LW
3193
3194 /* skip forward in input to the real script? */
3195
bbce6d69 3196 forbid_setid("-x");
bf4acbe4 3197#ifdef MACOS_TRADITIONAL
084592ab 3198 /* Since the Mac OS does not honor #! arguments for us, we do it ourselves */
ac27b0f5 3199
bf4acbe4
GS
3200 while (PL_doextract || gMacPerl_AlwaysExtract) {
3201 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch) {
3202 if (!gMacPerl_AlwaysExtract)
3203 Perl_croak(aTHX_ "No Perl script found in input\n");
e55ac0fa 3204
bf4acbe4
GS
3205 if (PL_doextract) /* require explicit override ? */
3206 if (!OverrideExtract(PL_origfilename))
3207 Perl_croak(aTHX_ "User aborted script\n");
3208 else
3209 PL_doextract = FALSE;
e55ac0fa 3210
bf4acbe4
GS
3211 /* Pater peccavi, file does not have #! */
3212 PerlIO_rewind(PL_rsfp);
e55ac0fa 3213
bf4acbe4
GS
3214 break;
3215 }
3216#else
3280af22
NIS
3217 while (PL_doextract) {
3218 if ((s = sv_gets(PL_linestr, PL_rsfp, 0)) == Nullch)
cea2e8a9 3219 Perl_croak(aTHX_ "No Perl script found in input\n");
bf4acbe4 3220#endif
4f0c37ba
IZ
3221 s2 = s;
3222 if (*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))) {
3280af22
NIS
3223 PerlIO_ungetc(PL_rsfp, '\n'); /* to keep line count right */
3224 PL_doextract = FALSE;
6e72f9df
PP
3225 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3226 s2 = s;
3227 while (*s == ' ' || *s == '\t') s++;
3228 if (*s++ == '-') {
3229 while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
3230 if (strnEQ(s2-4,"perl",4))
3231 /*SUPPRESS 530*/
155aba94
GS
3232 while ((s = moreswitches(s)))
3233 ;
33b78306 3234 }
95e8664e 3235#ifdef MACOS_TRADITIONAL
e55ac0fa
HS
3236 /* We are always searching for the #!perl line in MacPerl,
3237 * so if we find it, still keep the line count correct
3238 * by counting lines we already skipped over
3239 */
3240 for (; maclines > 0 ; maclines--)
3241 PerlIO_ungetc(PL_rsfp, '\n');
3242
95e8664e 3243 break;
e55ac0fa
HS
3244
3245 /* gMacPerl_AlwaysExtract is false in MPW tool */
3246 } else if (gMacPerl_AlwaysExtract) {
3247 ++maclines;
95e8664e 3248#endif
83025b21
LW
3249 }
3250 }
3251}
3252
afe37c7d 3253
76e3520e 3254STATIC void
cea2e8a9 3255S_init_ids(pTHX)
352d5a3a 3256{
d8eceb89
JH
3257 PL_uid = PerlProc_getuid();
3258 PL_euid = PerlProc_geteuid();
3259 PL_gid = PerlProc_getgid();
3260 PL_egid = PerlProc_getegid();
748a9306 3261#ifdef VMS
b28d0864
NIS
3262 PL_uid |= PL_gid << 16;
3263 PL_euid |= PL_egid << 16;
748a9306 3264#endif
3280af22 3265 PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
748a9306 3266}
79072805 3267
76e3520e 3268STATIC void
cea2e8a9 3269S_forbid_setid(pTHX_ char *s)
bbce6d69 3270{
3280af22 3271 if (PL_euid != PL_uid)
cea2e8a9 3272 Perl_croak(aTHX_ "No %s allowed while running setuid", s);
3280af22 3273 if (PL_egid != PL_gid)
cea2e8a9 3274 Perl_croak(aTHX_ "No %s allowed while running setgid", s);
bbce6d69
PP
3275}
3276
1ee4443e
IZ
3277void
3278Perl_init_debugger(pTHX)
748a9306 3279{
1ee4443e
IZ
3280 HV *ostash = PL_curstash;
3281
3280af22
NIS
3282 PL_curstash = PL_debstash;
3283 PL_dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
3284 AvREAL_off(PL_dbargs);
3285 PL_DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
3286 PL_DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
3287 PL_DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
1ee4443e 3288 sv_upgrade(GvSV(PL_DBsub), SVt_IV); /* IVX accessed if PERLDB_SUB_NN */
3280af22 3289 PL_DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3290 sv_setiv(PL_DBsingle, 0);
3280af22 3291 PL_DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3292 sv_setiv(PL_DBtrace, 0);
3280af22 3293 PL_DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
ac27b0f5 3294 sv_setiv(PL_DBsignal, 0);
06492da6
SF
3295 PL_DBassertion = GvSV((gv_fetchpv("assertion", GV_ADDMULTI, SVt_PV)));
3296 sv_setiv(PL_DBassertion, 0);
1ee4443e 3297 PL_curstash = ostash;
352d5a3a
LW
3298}
3299
2ce36478
SM
3300#ifndef STRESS_REALLOC
3301#define REASONABLE(size) (size)
3302#else
3303#define REASONABLE(size) (1) /* unreasonable */
3304#endif
3305
11343788 3306void
cea2e8a9 3307Perl_init_stacks(pTHX)
79072805 3308{
e336de0d 3309 /* start with 128-item stack and 8K cxstack */
3280af22 3310 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 3311 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS
3312 PL_curstackinfo->si_type = PERLSI_MAIN;
3313 PL_curstack = PL_curstackinfo->si_stack;
3314 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 3315
3280af22
NIS
3316 PL_stack_base = AvARRAY(PL_curstack);
3317 PL_stack_sp = PL_stack_base;
3318 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 3319
3280af22
NIS
3320 New(50,PL_tmps_stack,REASONABLE(128),SV*);
3321 PL_tmps_floor = -1;
3322 PL_tmps_ix = -1;
3323 PL_tmps_max = REASONABLE(128);
8990e307 3324
3280af22
NIS
3325 New(54,PL_markstack,REASONABLE(32),I32);
3326 PL_markstack_ptr = PL_markstack;
3327 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 3328
ce2f7c3b 3329 SET_MARK_OFFSET;
e336de0d 3330
3280af22
NIS
3331 New(54,PL_scopestack,REASONABLE(32),I32);
3332 PL_scopestack_ix = 0;
3333 PL_scopestack_max = REASONABLE(32);
79072805 3334
3280af22
NIS
3335 New(54,PL_savestack,REASONABLE(128),ANY);
3336 PL_savestack_ix = 0;
3337 PL_savestack_max = REASONABLE(128);
79072805 3338
3280af22
NIS
3339 New(54,PL_retstack,REASONABLE(16),OP*);
3340 PL_retstack_ix = 0;
3341 PL_retstack_max = REASONABLE(16);
378cc40b 3342}
33b78306 3343
2ce36478
SM
3344#undef REASONABLE
3345
76e3520e 3346STATIC void
cea2e8a9 3347S_nuke_stacks(pTHX)
6e72f9df 3348{
3280af22
NIS
3349 while (PL_curstackinfo->si_next)
3350 PL_curstackinfo = PL_curstackinfo->si_next;
3351 while (PL_curstackinfo) {
3352 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 3353 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS
3354 Safefree(PL_curstackinfo->si_cxstack);
3355 Safefree(PL_curstackinfo);
3356 PL_curstackinfo = p;
e336de0d 3357 }
3280af22
NIS
3358 Safefree(PL_tmps_stack);
3359 Safefree(PL_markstack);
3360 Safefree(PL_scopestack);
3361 Safefree(PL_savestack);
3362 Safefree(PL_retstack);
378cc40b 3363}
33b78306 3364
76e3520e 3365STATIC void
cea2e8a9 3366S_init_lexer(pTHX)
8990e307 3367{
06039172 3368 PerlIO *tmpfp;
3280af22
NIS
3369 tmpfp = PL_rsfp;
3370 PL_rsfp = Nullfp;
3371 lex_start(PL_linestr);
3372 PL_rsfp = tmpfp;
79cb57f6 3373 PL_subname = newSVpvn("main",4);
8990e307
LW
3374}
3375
76e3520e 3376STATIC void
cea2e8a9 3377S_init_predump_symbols(pTHX)
45d8adaa 3378{
93a17b20 3379 GV *tmpgv;
af8c498a 3380 IO *io;
79072805 3381
864dbfa3 3382 sv_setpvn(get_sv("\"", TRUE), " ", 1);
3280af22
NIS
3383 PL_stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
3384 GvMULTI_on(PL_stdingv);
af8c498a 3385 io = GvIOp(PL_stdingv);
a04651f4 3386 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 3387 IoIFP(io) = PerlIO_stdin();
adbc6bb1 3388 tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
a5f75d66 3389 GvMULTI_on(tmpgv);
af8c498a 3390 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3391
85e6fe83 3392 tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
a5f75d66 3393 GvMULTI_on(tmpgv);
af8c498a 3394 io = GvIOp(tmpgv);
a04651f4 3395 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3396 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 3397 setdefout(tmpgv);
adbc6bb1 3398 tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
a5f75d66 3399 GvMULTI_on(tmpgv);
af8c498a 3400 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3401
bf49b057
GS
3402 PL_stderrgv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
3403 GvMULTI_on(PL_stderrgv);
3404 io = GvIOp(PL_stderrgv);
a04651f4 3405 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 3406 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
adbc6bb1 3407 tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
a5f75d66 3408 GvMULTI_on(tmpgv);
af8c498a 3409 GvIOp(tmpgv) = (IO*)SvREFCNT_inc(io);
79072805 3410
3280af22 3411 PL_statname = NEWSV(66,0); /* last filename we did stat on */
ab821d7f 3412
bf4acbe4
GS
3413 if (PL_osname)
3414 Safefree(PL_osname);
3415 PL_osname = savepv(OSNAME);
79072805 3416}
33b78306 3417
a11ec5a9
RGS
3418void
3419Perl_init_argv_symbols(pTHX_ register int argc, register char **argv)
33b78306 3420{
79072805 3421 char *s;
79072805 3422 argc--,argv++; /* skip name of script */
3280af22 3423 if (PL_doswitches) {
79072805
LW
3424 for (; argc > 0 && **argv == '-'; argc--,argv++) {
3425 if (!argv[0][1])
3426 break;
379d538a 3427 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW
3428 argc--,argv++;
3429 break;
3430 }
155aba94 3431 if ((s = strchr(argv[0], '='))) {
79072805 3432 *s++ = '\0';
85e6fe83 3433 sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s);
79072805
LW
3434 }
3435 else
85e6fe83 3436 sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1);
fe14fcc3 3437 }
79072805 3438 }
a11ec5a9
RGS
3439 if ((PL_argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV))) {
3440 GvMULTI_on(PL_argvgv);
3441 (void)gv_AVadd(PL_argvgv);
3442 av_clear(GvAVn(PL_argvgv));
3443 for (; argc > 0; argc--,argv++) {
3444 SV *sv = newSVpv(argv[0],0);
3445 av_push(GvAVn(PL_argvgv),sv);
ce81ff12
JH
3446 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
3447 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
3448 SvUTF8_on(sv);
3449 }
a05d7ebb
JH
3450 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
3451 (void)sv_utf8_decode(sv);
a11ec5a9
RGS
3452 }
3453 }
3454}
3455
04fee9b5
NIS
3456#ifdef HAS_PROCSELFEXE
3457/* This is a function so that we don't hold on to MAXPATHLEN
8338e367 3458 bytes of stack longer than necessary
04fee9b5
NIS
3459 */
3460STATIC void
3461S_procself_val(pTHX_ SV *sv, char *arg0)
3462{
3463 char buf[MAXPATHLEN];
d13a6521 3464 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
75745e22
TJ
3465
3466 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
3467 includes a spurious NUL which will cause $^X to fail in system
3468 or backticks (this will prevent extensions from being built and
3469 many tests from working). readlink is not meant to add a NUL.
3470 Normal readlink works fine.
3471 */
3472 if (len > 0 && buf[len-1] == '\0') {
3473 len--;
3474 }
3475
d103ec31
JH
3476 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes